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Finding the Fourth Proportional to 43,909.92, 65,864.16 and 10,629.76

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Solution

The fourth proportional to 43,909.92, 65,864.16 and 10,629.76 is: 15,944.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,909.92 : 65,864.16 = 10,629.76 : x
  2. Step 2: Convert to fraction form
    43,909.92/65,864.16 = 10,629.76/x
  3. Step 3: Cross multiply
    43,909.92x = 65,864.16 × 10,629.76
  4. Step 4: Simplify right side
    43,909.92x = 700,120,213.40
  5. Step 5: Solve for x
    x = 700,120,213.40/43,909.92
  6. Step 6: Final answer
    x = 15,944.47

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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.