Home / 22,403.42-30,909.76-12,711.28

Finding the Fourth Proportional to 22,403.42, 30,909.76 and 12,711.28

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Solution

The fourth proportional to 22,403.42, 30,909.76 and 12,711.28 is: 17,537.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,403.42 : 30,909.76 = 12,711.28 : x
  2. Step 2: Convert to fraction form
    22,403.42/30,909.76 = 12,711.28/x
  3. Step 3: Cross multiply
    22,403.42x = 30,909.76 × 12,711.28
  4. Step 4: Simplify right side
    22,403.42x = 392,902,614.09
  5. Step 5: Solve for x
    x = 392,902,614.09/22,403.42
  6. Step 6: Final answer
    x = 17,537.62

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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.