Home / 11,158.38-15,398.43-6,442.56

Finding the Fourth Proportional to 11,158.38, 15,398.43 and 6,442.56

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Solution

The fourth proportional to 11,158.38, 15,398.43 and 6,442.56 is: 8,890.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,158.38 : 15,398.43 = 6,442.56 : x
  2. Step 2: Convert to fraction form
    11,158.38/15,398.43 = 6,442.56/x
  3. Step 3: Cross multiply
    11,158.38x = 15,398.43 × 6,442.56
  4. Step 4: Simplify right side
    11,158.38x = 99,205,309.18
  5. Step 5: Solve for x
    x = 99,205,309.18/11,158.38
  6. Step 6: Final answer
    x = 8,890.66

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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.