Home / 15,174.90-20,932.31-11,812.39

Finding the Fourth Proportional to 15,174.90, 20,932.31 and 11,812.39

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Solution

The fourth proportional to 15,174.90, 20,932.31 and 11,812.39 is: 16,294.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174.90 : 20,932.31 = 11,812.39 : x
  2. Step 2: Convert to fraction form
    15,174.90/20,932.31 = 11,812.39/x
  3. Step 3: Cross multiply
    15,174.90x = 20,932.31 × 11,812.39
  4. Step 4: Simplify right side
    15,174.90x = 247,260,586.52
  5. Step 5: Solve for x
    x = 247,260,586.52/15,174.90
  6. Step 6: Final answer
    x = 16,294.05

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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.