Home / 13,103.09-18,082.27-7,134.76

Finding the Fourth Proportional to 13,103.09, 18,082.27 and 7,134.76

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Solution

The fourth proportional to 13,103.09, 18,082.27 and 7,134.76 is: 9,845.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.09 : 18,082.27 = 7,134.76 : x
  2. Step 2: Convert to fraction form
    13,103.09/18,082.27 = 7,134.76/x
  3. Step 3: Cross multiply
    13,103.09x = 18,082.27 × 7,134.76
  4. Step 4: Simplify right side
    13,103.09x = 129,012,656.71
  5. Step 5: Solve for x
    x = 129,012,656.71/13,103.09
  6. Step 6: Final answer
    x = 9,845.97

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Half scale
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Double scale
Find fourth proportional to 13,104.09, 18,083.65 and 7,135.76
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.