Home / 31,628.72-47,443.08-13,876.76

Finding the Fourth Proportional to 31,628.72, 47,443.08 and 13,876.76

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Solution

The fourth proportional to 31,628.72, 47,443.08 and 13,876.76 is: 20,815.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,628.72 : 47,443.08 = 13,876.76 : x
  2. Step 2: Convert to fraction form
    31,628.72/47,443.08 = 13,876.76/x
  3. Step 3: Cross multiply
    31,628.72x = 47,443.08 × 13,876.76
  4. Step 4: Simplify right side
    31,628.72x = 658,356,234.82
  5. Step 5: Solve for x
    x = 658,356,234.82/31,628.72
  6. Step 6: Final answer
    x = 20,815.14

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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.