Home / 21,332.50-29,439.65-11,902.88

Finding the Fourth Proportional to 21,332.50, 29,439.65 and 11,902.88

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Solution

The fourth proportional to 21,332.50, 29,439.65 and 11,902.88 is: 16,426.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.50 : 29,439.65 = 11,902.88 : x
  2. Step 2: Convert to fraction form
    21,332.50/29,439.65 = 11,902.88/x
  3. Step 3: Cross multiply
    21,332.50x = 29,439.65 × 11,902.88
  4. Step 4: Simplify right side
    21,332.50x = 350,416,621.19
  5. Step 5: Solve for x
    x = 350,416,621.19/21,332.50
  6. Step 6: Final answer
    x = 16,426.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.