Home / 11,129.16-15,359.64-6,652.92

Finding the Fourth Proportional to 11,129.16, 15,359.64 and 6,652.92

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Solution

The fourth proportional to 11,129.16, 15,359.64 and 6,652.92 is: 9,181.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.16 : 15,359.64 = 6,652.92 : x
  2. Step 2: Convert to fraction form
    11,129.16/15,359.64 = 6,652.92/x
  3. Step 3: Cross multiply
    11,129.16x = 15,359.64 × 6,652.92
  4. Step 4: Simplify right side
    11,129.16x = 102,186,456.15
  5. Step 5: Solve for x
    x = 102,186,456.15/11,129.16
  6. Step 6: Final answer
    x = 9,181.87

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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.