Home / 13,114.76-18,098.36-7,146.43

Finding the Fourth Proportional to 13,114.76, 18,098.36 and 7,146.43

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Solution

The fourth proportional to 13,114.76, 18,098.36 and 7,146.43 is: 9,862.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,114.76 : 18,098.36 = 7,146.43 : x
  2. Step 2: Convert to fraction form
    13,114.76/18,098.36 = 7,146.43/x
  3. Step 3: Cross multiply
    13,114.76x = 18,098.36 × 7,146.43
  4. Step 4: Simplify right side
    13,114.76x = 129,338,662.85
  5. Step 5: Solve for x
    x = 129,338,662.85/13,114.76
  6. Step 6: Final answer
    x = 9,862.07

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Half scale
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Double scale
Find fourth proportional to 13,115.76, 18,099.74 and 7,147.43
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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.