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Finding the Fourth Proportional to 39,789.80, 59,684.70 and 16,404.20

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Solution

The fourth proportional to 39,789.80, 59,684.70 and 16,404.20 is: 24,606.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,789.80 : 59,684.70 = 16,404.20 : x
  2. Step 2: Convert to fraction form
    39,789.80/59,684.70 = 16,404.20/x
  3. Step 3: Cross multiply
    39,789.80x = 59,684.70 × 16,404.20
  4. Step 4: Simplify right side
    39,789.80x = 979,079,755.74
  5. Step 5: Solve for x
    x = 979,079,755.74/39,789.80
  6. Step 6: Final answer
    x = 24,606.30

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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.