Home / 14,921.20-22,381.80-14,265.10

Finding the Fourth Proportional to 14,921.20, 22,381.80 and 14,265.10

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Solution

The fourth proportional to 14,921.20, 22,381.80 and 14,265.10 is: 21,397.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,921.20 : 22,381.80 = 14,265.10 : x
  2. Step 2: Convert to fraction form
    14,921.20/22,381.80 = 14,265.10/x
  3. Step 3: Cross multiply
    14,921.20x = 22,381.80 × 14,265.10
  4. Step 4: Simplify right side
    14,921.20x = 319,278,615.18
  5. Step 5: Solve for x
    x = 319,278,615.18/14,921.20
  6. Step 6: Final answer
    x = 21,397.65

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Double scale
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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.