Home / 13,117.14-18,101.40-7,148.85

Finding the Fourth Proportional to 13,117.14, 18,101.40 and 7,148.85

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Solution

The fourth proportional to 13,117.14, 18,101.40 and 7,148.85 is: 9,865.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.14 : 18,101.40 = 7,148.85 : x
  2. Step 2: Convert to fraction form
    13,117.14/18,101.40 = 7,148.85/x
  3. Step 3: Cross multiply
    13,117.14x = 18,101.40 × 7,148.85
  4. Step 4: Simplify right side
    13,117.14x = 129,404,193.39
  5. Step 5: Solve for x
    x = 129,404,193.39/13,117.14
  6. Step 6: Final answer
    x = 9,865.28

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Double scale
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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.