Home / 11,188.78-15,439.32-6,472.18

Finding the Fourth Proportional to 11,188.78, 15,439.32 and 6,472.18

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Solution

The fourth proportional to 11,188.78, 15,439.32 and 6,472.18 is: 8,930.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,188.78 : 15,439.32 = 6,472.18 : x
  2. Step 2: Convert to fraction form
    11,188.78/15,439.32 = 6,472.18/x
  3. Step 3: Cross multiply
    11,188.78x = 15,439.32 × 6,472.18
  4. Step 4: Simplify right side
    11,188.78x = 99,926,058.12
  5. Step 5: Solve for x
    x = 99,926,058.12/11,188.78
  6. Step 6: Final answer
    x = 8,930.92

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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.