Home / 13,116.14-18,099.75-7,147.69

Finding the Fourth Proportional to 13,116.14, 18,099.75 and 7,147.69

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Solution

The fourth proportional to 13,116.14, 18,099.75 and 7,147.69 is: 9,863.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,116.14 : 18,099.75 = 7,147.69 : x
  2. Step 2: Convert to fraction form
    13,116.14/18,099.75 = 7,147.69/x
  3. Step 3: Cross multiply
    13,116.14x = 18,099.75 × 7,147.69
  4. Step 4: Simplify right side
    13,116.14x = 129,371,311.58
  5. Step 5: Solve for x
    x = 129,371,311.58/13,116.14
  6. Step 6: Final answer
    x = 9,863.52

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Similar ratio
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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.