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Finding the Fourth Proportional to 29,331.60, 43,981.20 and 11,781.60

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Solution

The fourth proportional to 29,331.60, 43,981.20 and 11,781.60 is: 17,665.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,331.60 : 43,981.20 = 11,781.60 : x
  2. Step 2: Convert to fraction form
    29,331.60/43,981.20 = 11,781.60/x
  3. Step 3: Cross multiply
    29,331.60x = 43,981.20 × 11,781.60
  4. Step 4: Simplify right side
    29,331.60x = 518,168,905.92
  5. Step 5: Solve for x
    x = 518,168,905.92/29,331.60
  6. Step 6: Final answer
    x = 17,665.89

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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.