Home / 11,519.32-17,189.11-10,278.20

Finding the Fourth Proportional to 11,519.32, 17,189.11 and 10,278.20

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Solution

The fourth proportional to 11,519.32, 17,189.11 and 10,278.20 is: 15,337.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,519.32 : 17,189.11 = 10,278.20 : x
  2. Step 2: Convert to fraction form
    11,519.32/17,189.11 = 10,278.20/x
  3. Step 3: Cross multiply
    11,519.32x = 17,189.11 × 10,278.20
  4. Step 4: Simplify right side
    11,519.32x = 176,673,110.40
  5. Step 5: Solve for x
    x = 176,673,110.40/11,519.32
  6. Step 6: Final answer
    x = 15,337.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.