Home / 39,920.85-59,881.28-18,853.97

Finding the Fourth Proportional to 39,920.85, 59,881.28 and 18,853.97

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Solution

The fourth proportional to 39,920.85, 59,881.28 and 18,853.97 is: 28,280.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,920.85 : 59,881.28 = 18,853.97 : x
  2. Step 2: Convert to fraction form
    39,920.85/59,881.28 = 18,853.97/x
  3. Step 3: Cross multiply
    39,920.85x = 59,881.28 × 18,853.97
  4. Step 4: Simplify right side
    39,920.85x = 1,128,999,463.01
  5. Step 5: Solve for x
    x = 1,128,999,463.01/39,920.85
  6. Step 6: Final answer
    x = 28,280.95

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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.