Home / 15,423.78-23,122.16-7,414.55

Finding the Fourth Proportional to 15,423.78, 23,122.16 and 7,414.55

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Solution

The fourth proportional to 15,423.78, 23,122.16 and 7,414.55 is: 11,115.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.78 : 23,122.16 = 7,414.55 : x
  2. Step 2: Convert to fraction form
    15,423.78/23,122.16 = 7,414.55/x
  3. Step 3: Cross multiply
    15,423.78x = 23,122.16 × 7,414.55
  4. Step 4: Simplify right side
    15,423.78x = 171,440,373.26
  5. Step 5: Solve for x
    x = 171,440,373.26/15,423.78
  6. Step 6: Final answer
    x = 11,115.33

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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.