Home / 15,147.25-20,902.98-8,432.87

Finding the Fourth Proportional to 15,147.25, 20,902.98 and 8,432.87

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Solution

The fourth proportional to 15,147.25, 20,902.98 and 8,432.87 is: 11,637.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,147.25 : 20,902.98 = 8,432.87 : x
  2. Step 2: Convert to fraction form
    15,147.25/20,902.98 = 8,432.87/x
  3. Step 3: Cross multiply
    15,147.25x = 20,902.98 × 8,432.87
  4. Step 4: Simplify right side
    15,147.25x = 176,272,112.95
  5. Step 5: Solve for x
    x = 176,272,112.95/15,147.25
  6. Step 6: Final answer
    x = 11,637.24

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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.