Home / 15,472.78-23,211.33-7,679.50

Finding the Fourth Proportional to 15,472.78, 23,211.33 and 7,679.50

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Solution

The fourth proportional to 15,472.78, 23,211.33 and 7,679.50 is: 11,520.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,472.78 : 23,211.33 = 7,679.50 : x
  2. Step 2: Convert to fraction form
    15,472.78/23,211.33 = 7,679.50/x
  3. Step 3: Cross multiply
    15,472.78x = 23,211.33 × 7,679.50
  4. Step 4: Simplify right side
    15,472.78x = 178,251,408.74
  5. Step 5: Solve for x
    x = 178,251,408.74/15,472.78
  6. Step 6: Final answer
    x = 11,520.32

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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.