Home / 10,117.40-15,174.27-2,720.13

Finding the Fourth Proportional to 10,117.40, 15,174.27 and 2,720.13

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Solution

The fourth proportional to 10,117.40, 15,174.27 and 2,720.13 is: 4,079.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,117.40 : 15,174.27 = 2,720.13 : x
  2. Step 2: Convert to fraction form
    10,117.40/15,174.27 = 2,720.13/x
  3. Step 3: Cross multiply
    10,117.40x = 15,174.27 × 2,720.13
  4. Step 4: Simplify right side
    10,117.40x = 41,275,987.06
  5. Step 5: Solve for x
    x = 41,275,987.06/10,117.40
  6. Step 6: Final answer
    x = 4,079.71

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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.