Home / 13,079.66-18,049.56-7,111.19

Finding the Fourth Proportional to 13,079.66, 18,049.56 and 7,111.19

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Solution

The fourth proportional to 13,079.66, 18,049.56 and 7,111.19 is: 9,813.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.66 : 18,049.56 = 7,111.19 : x
  2. Step 2: Convert to fraction form
    13,079.66/18,049.56 = 7,111.19/x
  3. Step 3: Cross multiply
    13,079.66x = 18,049.56 × 7,111.19
  4. Step 4: Simplify right side
    13,079.66x = 128,353,850.58
  5. Step 5: Solve for x
    x = 128,353,850.58/13,079.66
  6. Step 6: Final answer
    x = 9,813.24

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Half scale
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Double scale
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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.