Home / 20,875.29-28,791.17-18,352.04

Finding the Fourth Proportional to 20,875.29, 28,791.17 and 18,352.04

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Solution

The fourth proportional to 20,875.29, 28,791.17 and 18,352.04 is: 25,311.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.29 : 28,791.17 = 18,352.04 : x
  2. Step 2: Convert to fraction form
    20,875.29/28,791.17 = 18,352.04/x
  3. Step 3: Cross multiply
    20,875.29x = 28,791.17 × 18,352.04
  4. Step 4: Simplify right side
    20,875.29x = 528,376,831.13
  5. Step 5: Solve for x
    x = 528,376,831.13/20,875.29
  6. Step 6: Final answer
    x = 25,311.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.