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Finding the Fourth Proportional to 29,385.60, 44,121.60 and 20,659.20

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Solution

The fourth proportional to 29,385.60, 44,121.60 and 20,659.20 is: 31,019.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,385.60 : 44,121.60 = 20,659.20 : x
  2. Step 2: Convert to fraction form
    29,385.60/44,121.60 = 20,659.20/x
  3. Step 3: Cross multiply
    29,385.60x = 44,121.60 × 20,659.20
  4. Step 4: Simplify right side
    29,385.60x = 911,516,958.72
  5. Step 5: Solve for x
    x = 911,516,958.72/29,385.60
  6. Step 6: Final answer
    x = 31,019.17

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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.