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Finding the Fourth Proportional to 39,891.70, 59,845.65 and 13,599.10

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Solution

The fourth proportional to 39,891.70, 59,845.65 and 13,599.10 is: 20,401.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,891.70 : 59,845.65 = 13,599.10 : x
  2. Step 2: Convert to fraction form
    39,891.70/59,845.65 = 13,599.10/x
  3. Step 3: Cross multiply
    39,891.70x = 59,845.65 × 13,599.10
  4. Step 4: Simplify right side
    39,891.70x = 813,846,978.92
  5. Step 5: Solve for x
    x = 813,846,978.92/39,891.70
  6. Step 6: Final answer
    x = 20,401.41

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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.