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Finding the Fourth Proportional to 15,013.74, 20,716.11 and 9,422.22

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Solution

The fourth proportional to 15,013.74, 20,716.11 and 9,422.22 is: 13,000.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,013.74 : 20,716.11 = 9,422.22 : x
  2. Step 2: Convert to fraction form
    15,013.74/20,716.11 = 9,422.22/x
  3. Step 3: Cross multiply
    15,013.74x = 20,716.11 × 9,422.22
  4. Step 4: Simplify right side
    15,013.74x = 195,191,745.96
  5. Step 5: Solve for x
    x = 195,191,745.96/15,013.74
  6. Step 6: Final answer
    x = 13,000.87

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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.