Home / 13,118.52-18,103.45-7,150.19

Finding the Fourth Proportional to 13,118.52, 18,103.45 and 7,150.19

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Solution

The fourth proportional to 13,118.52, 18,103.45 and 7,150.19 is: 9,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.52 : 18,103.45 = 7,150.19 : x
  2. Step 2: Convert to fraction form
    13,118.52/18,103.45 = 7,150.19/x
  3. Step 3: Cross multiply
    13,118.52x = 18,103.45 × 7,150.19
  4. Step 4: Simplify right side
    13,118.52x = 129,443,107.16
  5. Step 5: Solve for x
    x = 129,443,107.16/13,118.52
  6. Step 6: Final answer
    x = 9,867.20

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Half scale
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Double scale
Find fourth proportional to 13,119.52, 18,104.83 and 7,151.19
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.