Home / 11,313.20-15,612.18-6,278.18

Finding the Fourth Proportional to 11,313.20, 15,612.18 and 6,278.18

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Solution

The fourth proportional to 11,313.20, 15,612.18 and 6,278.18 is: 8,663.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,313.20 : 15,612.18 = 6,278.18 : x
  2. Step 2: Convert to fraction form
    11,313.20/15,612.18 = 6,278.18/x
  3. Step 3: Cross multiply
    11,313.20x = 15,612.18 × 6,278.18
  4. Step 4: Simplify right side
    11,313.20x = 98,016,076.23
  5. Step 5: Solve for x
    x = 98,016,076.23/11,313.20
  6. Step 6: Final answer
    x = 8,663.87

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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.