Home / 10,117.17-15,179.40-5,189.13

Finding the Fourth Proportional to 10,117.17, 15,179.40 and 5,189.13

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Solution

The fourth proportional to 10,117.17, 15,179.40 and 5,189.13 is: 7,785.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,117.17 : 15,179.40 = 5,189.13 : x
  2. Step 2: Convert to fraction form
    10,117.17/15,179.40 = 5,189.13/x
  3. Step 3: Cross multiply
    10,117.17x = 15,179.40 × 5,189.13
  4. Step 4: Simplify right side
    10,117.17x = 78,767,879.92
  5. Step 5: Solve for x
    x = 78,767,879.92/10,117.17
  6. Step 6: Final answer
    x = 7,785.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.