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Finding the Fourth Proportional to 43,609.80, 65,414.70 and 15,904.20

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Solution

The fourth proportional to 43,609.80, 65,414.70 and 15,904.20 is: 23,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,609.80 : 65,414.70 = 15,904.20 : x
  2. Step 2: Convert to fraction form
    43,609.80/65,414.70 = 15,904.20/x
  3. Step 3: Cross multiply
    43,609.80x = 65,414.70 × 15,904.20
  4. Step 4: Simplify right side
    43,609.80x = 1,040,368,471.74
  5. Step 5: Solve for x
    x = 1,040,368,471.74/43,609.80
  6. Step 6: Final answer
    x = 23,856.30

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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.