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Finding the Fourth Proportional to 39,891.24, 59,837.02 and 12,189.16

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Solution

The fourth proportional to 39,891.24, 59,837.02 and 12,189.16 is: 18,283.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,891.24 : 59,837.02 = 12,189.16 : x
  2. Step 2: Convert to fraction form
    39,891.24/59,837.02 = 12,189.16/x
  3. Step 3: Cross multiply
    39,891.24x = 59,837.02 × 12,189.16
  4. Step 4: Simplify right side
    39,891.24x = 729,363,010.70
  5. Step 5: Solve for x
    x = 729,363,010.70/39,891.24
  6. Step 6: Final answer
    x = 18,283.79

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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.