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Finding the Fourth Proportional to 14,781.40, 22,182.90 and 10,407.40

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Solution

The fourth proportional to 14,781.40, 22,182.90 and 10,407.40 is: 15,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,781.40 : 22,182.90 = 10,407.40 : x
  2. Step 2: Convert to fraction form
    14,781.40/22,182.90 = 10,407.40/x
  3. Step 3: Cross multiply
    14,781.40x = 22,182.90 × 10,407.40
  4. Step 4: Simplify right side
    14,781.40x = 230,866,313.46
  5. Step 5: Solve for x
    x = 230,866,313.46/14,781.40
  6. Step 6: Final answer
    x = 15,618.70

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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.