Home / 11,119.32-15,343.20-6,642.08

Finding the Fourth Proportional to 11,119.32, 15,343.20 and 6,642.08

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Solution

The fourth proportional to 11,119.32, 15,343.20 and 6,642.08 is: 9,165.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.32 : 15,343.20 = 6,642.08 : x
  2. Step 2: Convert to fraction form
    11,119.32/15,343.20 = 6,642.08/x
  3. Step 3: Cross multiply
    11,119.32x = 15,343.20 × 6,642.08
  4. Step 4: Simplify right side
    11,119.32x = 101,910,761.86
  5. Step 5: Solve for x
    x = 101,910,761.86/11,119.32
  6. Step 6: Final answer
    x = 9,165.20

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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.