Home / 11,515.18-17,279.40-4,851.16

Finding the Fourth Proportional to 11,515.18, 17,279.40 and 4,851.16

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Solution

The fourth proportional to 11,515.18, 17,279.40 and 4,851.16 is: 7,279.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.18 : 17,279.40 = 4,851.16 : x
  2. Step 2: Convert to fraction form
    11,515.18/17,279.40 = 4,851.16/x
  3. Step 3: Cross multiply
    11,515.18x = 17,279.40 × 4,851.16
  4. Step 4: Simplify right side
    11,515.18x = 83,825,134.10
  5. Step 5: Solve for x
    x = 83,825,134.10/11,515.18
  6. Step 6: Final answer
    x = 7,279.53

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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.