Home / 21,211.07-31,816.60-8,060.31

Finding the Fourth Proportional to 21,211.07, 31,816.60 and 8,060.31

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Solution

The fourth proportional to 21,211.07, 31,816.60 and 8,060.31 is: 12,090.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.07 : 31,816.60 = 8,060.31 : x
  2. Step 2: Convert to fraction form
    21,211.07/31,816.60 = 8,060.31/x
  3. Step 3: Cross multiply
    21,211.07x = 31,816.60 × 8,060.31
  4. Step 4: Simplify right side
    21,211.07x = 256,451,639.00
  5. Step 5: Solve for x
    x = 256,451,639.00/21,211.07
  6. Step 6: Final answer
    x = 12,090.47

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Similar ratio
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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.