Home / 15,147.20-20,902.25-8,432.51

Finding the Fourth Proportional to 15,147.20, 20,902.25 and 8,432.51

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Solution

The fourth proportional to 15,147.20, 20,902.25 and 8,432.51 is: 11,636.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,147.20 : 20,902.25 = 8,432.51 : x
  2. Step 2: Convert to fraction form
    15,147.20/20,902.25 = 8,432.51/x
  3. Step 3: Cross multiply
    15,147.20x = 20,902.25 × 8,432.51
  4. Step 4: Simplify right side
    15,147.20x = 176,258,348.72
  5. Step 5: Solve for x
    x = 176,258,348.72/15,147.20
  6. Step 6: Final answer
    x = 11,636.36

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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.