Home / 11,387.18-15,713.68-6,351.81

Finding the Fourth Proportional to 11,387.18, 15,713.68 and 6,351.81

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Solution

The fourth proportional to 11,387.18, 15,713.68 and 6,351.81 is: 8,765.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.18 : 15,713.68 = 6,351.81 : x
  2. Step 2: Convert to fraction form
    11,387.18/15,713.68 = 6,351.81/x
  3. Step 3: Cross multiply
    11,387.18x = 15,713.68 × 6,351.81
  4. Step 4: Simplify right side
    11,387.18x = 99,810,309.76
  5. Step 5: Solve for x
    x = 99,810,309.76/11,387.18
  6. Step 6: Final answer
    x = 8,765.15

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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.