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Finding the Fourth Proportional to 38,690.80, 58,057.80 and 16,500.40

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Solution

The fourth proportional to 38,690.80, 58,057.80 and 16,500.40 is: 24,759.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,690.80 : 58,057.80 = 16,500.40 : x
  2. Step 2: Convert to fraction form
    38,690.80/58,057.80 = 16,500.40/x
  3. Step 3: Cross multiply
    38,690.80x = 58,057.80 × 16,500.40
  4. Step 4: Simplify right side
    38,690.80x = 957,976,923.12
  5. Step 5: Solve for x
    x = 957,976,923.12/38,690.80
  6. Step 6: Final answer
    x = 24,759.81

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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.