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Finding the Fourth Proportional to 8,990.70, 13,427.24 and 7,531.02

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Solution

The fourth proportional to 8,990.70, 13,427.24 and 7,531.02 is: 11,247.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.70 : 13,427.24 = 7,531.02 : x
  2. Step 2: Convert to fraction form
    8,990.70/13,427.24 = 7,531.02/x
  3. Step 3: Cross multiply
    8,990.70x = 13,427.24 × 7,531.02
  4. Step 4: Simplify right side
    8,990.70x = 101,120,775.33
  5. Step 5: Solve for x
    x = 101,120,775.33/8,990.70
  6. Step 6: Final answer
    x = 11,247.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.