Home / 39,724.20-59,489.10-18,923.40

Finding the Fourth Proportional to 39,724.20, 59,489.10 and 18,923.40

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Solution

The fourth proportional to 39,724.20, 59,489.10 and 18,923.40 is: 28,338.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,724.20 : 59,489.10 = 18,923.40 : x
  2. Step 2: Convert to fraction form
    39,724.20/59,489.10 = 18,923.40/x
  3. Step 3: Cross multiply
    39,724.20x = 59,489.10 × 18,923.40
  4. Step 4: Simplify right side
    39,724.20x = 1,125,736,034.94
  5. Step 5: Solve for x
    x = 1,125,736,034.94/39,724.20
  6. Step 6: Final answer
    x = 28,338.80

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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.