Home / 11,436.20-15,782.28-6,400.61

Finding the Fourth Proportional to 11,436.20, 15,782.28 and 6,400.61

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Solution

The fourth proportional to 11,436.20, 15,782.28 and 6,400.61 is: 8,833.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,436.20 : 15,782.28 = 6,400.61 : x
  2. Step 2: Convert to fraction form
    11,436.20/15,782.28 = 6,400.61/x
  3. Step 3: Cross multiply
    11,436.20x = 15,782.28 × 6,400.61
  4. Step 4: Simplify right side
    11,436.20x = 101,016,219.19
  5. Step 5: Solve for x
    x = 101,016,219.19/11,436.20
  6. Step 6: Final answer
    x = 8,833.02

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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.