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Finding the Fourth Proportional to 22,752.60, 34,128.90 and 21,456.60

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Solution

The fourth proportional to 22,752.60, 34,128.90 and 21,456.60 is: 32,184.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,752.60 : 34,128.90 = 21,456.60 : x
  2. Step 2: Convert to fraction form
    22,752.60/34,128.90 = 21,456.60/x
  3. Step 3: Cross multiply
    22,752.60x = 34,128.90 × 21,456.60
  4. Step 4: Simplify right side
    22,752.60x = 732,290,155.74
  5. Step 5: Solve for x
    x = 732,290,155.74/22,752.60
  6. Step 6: Final answer
    x = 32,184.90

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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.