Home / 15,147.31-20,902.88-8,432.94

Finding the Fourth Proportional to 15,147.31, 20,902.88 and 8,432.94

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Solution

The fourth proportional to 15,147.31, 20,902.88 and 8,432.94 is: 11,637.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,147.31 : 20,902.88 = 8,432.94 : x
  2. Step 2: Convert to fraction form
    15,147.31/20,902.88 = 8,432.94/x
  3. Step 3: Cross multiply
    15,147.31x = 20,902.88 × 8,432.94
  4. Step 4: Simplify right side
    15,147.31x = 176,272,732.29
  5. Step 5: Solve for x
    x = 176,272,732.29/15,147.31
  6. Step 6: Final answer
    x = 11,637.23

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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.