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Finding the Fourth Proportional to 29,807.60, 44,695.20 and 12,279.20

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Solution

The fourth proportional to 29,807.60, 44,695.20 and 12,279.20 is: 18,412.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,807.60 : 44,695.20 = 12,279.20 : x
  2. Step 2: Convert to fraction form
    29,807.60/44,695.20 = 12,279.20/x
  3. Step 3: Cross multiply
    29,807.60x = 44,695.20 × 12,279.20
  4. Step 4: Simplify right side
    29,807.60x = 548,821,299.84
  5. Step 5: Solve for x
    x = 548,821,299.84/29,807.60
  6. Step 6: Final answer
    x = 18,412.13

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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.