Home / 21,280,789,049.40-31,921,183,574.10-13,444,372,639.80

Finding the Fourth Proportional to 21,280,789,049.40, 31,921,183,574.10 and 13,444,372,639.80

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Solution

The fourth proportional to 21,280,789,049.40, 31,921,183,574.10 and 13,444,372,639.80 is: 20,166,558,959.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280,789,049.40 : 31,921,183,574.10 = 13,444,372,639.80 : x
  2. Step 2: Convert to fraction form
    21,280,789,049.40/31,921,183,574.10 = 13,444,372,639.80/x
  3. Step 3: Cross multiply
    21,280,789,049.40x = 31,921,183,574.10 × 13,444,372,639.80
  4. Step 4: Simplify right side
    21,280,789,049.40x = 429,160,287,073,663,188,992
  5. Step 5: Solve for x
    x = 429,160,287,073,663,188,992/21,280,789,049.40
  6. Step 6: Final answer
    x = 20,166,558,959.70

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.