Home / 20,863.47-28,774.88-18,340.22

Finding the Fourth Proportional to 20,863.47, 28,774.88 and 18,340.22

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Solution

The fourth proportional to 20,863.47, 28,774.88 and 18,340.22 is: 25,294.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.47 : 28,774.88 = 18,340.22 : x
  2. Step 2: Convert to fraction form
    20,863.47/28,774.88 = 18,340.22/x
  3. Step 3: Cross multiply
    20,863.47x = 28,774.88 × 18,340.22
  4. Step 4: Simplify right side
    20,863.47x = 527,737,678.69
  5. Step 5: Solve for x
    x = 527,737,678.69/20,863.47
  6. Step 6: Final answer
    x = 25,294.81

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1.5x scale

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.