Home / 11,439.52-15,787.26-6,403.42

Finding the Fourth Proportional to 11,439.52, 15,787.26 and 6,403.42

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Solution

The fourth proportional to 11,439.52, 15,787.26 and 6,403.42 is: 8,837.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.52 : 15,787.26 = 6,403.42 : x
  2. Step 2: Convert to fraction form
    11,439.52/15,787.26 = 6,403.42/x
  3. Step 3: Cross multiply
    11,439.52x = 15,787.26 × 6,403.42
  4. Step 4: Simplify right side
    11,439.52x = 101,092,456.43
  5. Step 5: Solve for x
    x = 101,092,456.43/11,439.52
  6. Step 6: Final answer
    x = 8,837.12

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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.