Home / 20,468.62-30,683.76-18,642.61

Finding the Fourth Proportional to 20,468.62, 30,683.76 and 18,642.61

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Solution

The fourth proportional to 20,468.62, 30,683.76 and 18,642.61 is: 27,946.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.62 : 30,683.76 = 18,642.61 : x
  2. Step 2: Convert to fraction form
    20,468.62/30,683.76 = 18,642.61/x
  3. Step 3: Cross multiply
    20,468.62x = 30,683.76 × 18,642.61
  4. Step 4: Simplify right side
    20,468.62x = 572,025,371.01
  5. Step 5: Solve for x
    x = 572,025,371.01/20,468.62
  6. Step 6: Final answer
    x = 27,946.46

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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.