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Finding the Fourth Proportional to 8,679.50, 13,013.78 and 7,363.72

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Solution

The fourth proportional to 8,679.50, 13,013.78 and 7,363.72 is: 11,040.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.50 : 13,013.78 = 7,363.72 : x
  2. Step 2: Convert to fraction form
    8,679.50/13,013.78 = 7,363.72/x
  3. Step 3: Cross multiply
    8,679.50x = 13,013.78 × 7,363.72
  4. Step 4: Simplify right side
    8,679.50x = 95,829,832.06
  5. Step 5: Solve for x
    x = 95,829,832.06/8,679.50
  6. Step 6: Final answer
    x = 11,040.94

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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.