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Finding the Fourth Proportional to 38,585.80, 57,878.70 and 16,399.90

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Solution

The fourth proportional to 38,585.80, 57,878.70 and 16,399.90 is: 24,599.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,585.80 : 57,878.70 = 16,399.90 : x
  2. Step 2: Convert to fraction form
    38,585.80/57,878.70 = 16,399.90/x
  3. Step 3: Cross multiply
    38,585.80x = 57,878.70 × 16,399.90
  4. Step 4: Simplify right side
    38,585.80x = 949,204,892.13
  5. Step 5: Solve for x
    x = 949,204,892.13/38,585.80
  6. Step 6: Final answer
    x = 24,599.85

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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.