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Finding the Fourth Proportional to 22,390.90, 33,593.94 and 9,909.20

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Solution

The fourth proportional to 22,390.90, 33,593.94 and 9,909.20 is: 14,867.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,390.90 : 33,593.94 = 9,909.20 : x
  2. Step 2: Convert to fraction form
    22,390.90/33,593.94 = 9,909.20/x
  3. Step 3: Cross multiply
    22,390.90x = 33,593.94 × 9,909.20
  4. Step 4: Simplify right side
    22,390.90x = 332,889,154.23
  5. Step 5: Solve for x
    x = 332,889,154.23/22,390.90
  6. Step 6: Final answer
    x = 14,867.16

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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.