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Finding the Fourth Proportional to 39,200.40, 58,757.40 and 21,682.80

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Solution

The fourth proportional to 39,200.40, 58,757.40 and 21,682.80 is: 32,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,200.40 : 58,757.40 = 21,682.80 : x
  2. Step 2: Convert to fraction form
    39,200.40/58,757.40 = 21,682.80/x
  3. Step 3: Cross multiply
    39,200.40x = 58,757.40 × 21,682.80
  4. Step 4: Simplify right side
    39,200.40x = 1,274,024,952.72
  5. Step 5: Solve for x
    x = 1,274,024,952.72/39,200.40
  6. Step 6: Final answer
    x = 32,500.30

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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.