Home / 13,217.30-18,237.22-7,553.90

Finding the Fourth Proportional to 13,217.30, 18,237.22 and 7,553.90

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Solution

The fourth proportional to 13,217.30, 18,237.22 and 7,553.90 is: 10,422.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.30 : 18,237.22 = 7,553.90 : x
  2. Step 2: Convert to fraction form
    13,217.30/18,237.22 = 7,553.90/x
  3. Step 3: Cross multiply
    13,217.30x = 18,237.22 × 7,553.90
  4. Step 4: Simplify right side
    13,217.30x = 137,762,136.16
  5. Step 5: Solve for x
    x = 137,762,136.16/13,217.30
  6. Step 6: Final answer
    x = 10,422.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.