Home / 11,398.62-15,712.85-8,876.28

Finding the Fourth Proportional to 11,398.62, 15,712.85 and 8,876.28

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Solution

The fourth proportional to 11,398.62, 15,712.85 and 8,876.28 is: 12,235.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,398.62 : 15,712.85 = 8,876.28 : x
  2. Step 2: Convert to fraction form
    11,398.62/15,712.85 = 8,876.28/x
  3. Step 3: Cross multiply
    11,398.62x = 15,712.85 × 8,876.28
  4. Step 4: Simplify right side
    11,398.62x = 139,471,611.82
  5. Step 5: Solve for x
    x = 139,471,611.82/11,398.62
  6. Step 6: Final answer
    x = 12,235.83

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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.