Home / 11,436.27-15,781.95-6,400.43

Finding the Fourth Proportional to 11,436.27, 15,781.95 and 6,400.43

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Solution

The fourth proportional to 11,436.27, 15,781.95 and 6,400.43 is: 8,832.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,436.27 : 15,781.95 = 6,400.43 : x
  2. Step 2: Convert to fraction form
    11,436.27/15,781.95 = 6,400.43/x
  3. Step 3: Cross multiply
    11,436.27x = 15,781.95 × 6,400.43
  4. Step 4: Simplify right side
    11,436.27x = 101,011,305.69
  5. Step 5: Solve for x
    x = 101,011,305.69/11,436.27
  6. Step 6: Final answer
    x = 8,832.54

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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.