Home / 10,350.12-15,511.20-7,422

Finding the Fourth Proportional to 10,350.12, 15,511.20 and 7,422

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Solution

The fourth proportional to 10,350.12, 15,511.20 and 7,422 is: 11,122.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,350.12 : 15,511.20 = 7,422 : x
  2. Step 2: Convert to fraction form
    10,350.12/15,511.20 = 7,422/x
  3. Step 3: Cross multiply
    10,350.12x = 15,511.20 × 7,422
  4. Step 4: Simplify right side
    10,350.12x = 115,124,126.40
  5. Step 5: Solve for x
    x = 115,124,126.40/10,350.12
  6. Step 6: Final answer
    x = 11,122.98

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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.