Home / 15,432.55-23,138.29-7,423.09

Finding the Fourth Proportional to 15,432.55, 23,138.29 and 7,423.09

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Solution

The fourth proportional to 15,432.55, 23,138.29 and 7,423.09 is: 11,129.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.55 : 23,138.29 = 7,423.09 : x
  2. Step 2: Convert to fraction form
    15,432.55/23,138.29 = 7,423.09/x
  3. Step 3: Cross multiply
    15,432.55x = 23,138.29 × 7,423.09
  4. Step 4: Simplify right side
    15,432.55x = 171,757,456.31
  5. Step 5: Solve for x
    x = 171,757,456.31/15,432.55
  6. Step 6: Final answer
    x = 11,129.56

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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.