Home / 20,342.97-30,519.33-8,490.15

Finding the Fourth Proportional to 20,342.97, 30,519.33 and 8,490.15

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Solution

The fourth proportional to 20,342.97, 30,519.33 and 8,490.15 is: 12,737.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,342.97 : 30,519.33 = 8,490.15 : x
  2. Step 2: Convert to fraction form
    20,342.97/30,519.33 = 8,490.15/x
  3. Step 3: Cross multiply
    20,342.97x = 30,519.33 × 8,490.15
  4. Step 4: Simplify right side
    20,342.97x = 259,113,689.60
  5. Step 5: Solve for x
    x = 259,113,689.60/20,342.97
  6. Step 6: Final answer
    x = 12,737.26

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1.5x scale

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.