Home / 13,079.48-18,049.68-7,111.14

Finding the Fourth Proportional to 13,079.48, 18,049.68 and 7,111.14

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Solution

The fourth proportional to 13,079.48, 18,049.68 and 7,111.14 is: 9,813.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.48 : 18,049.68 = 7,111.14 : x
  2. Step 2: Convert to fraction form
    13,079.48/18,049.68 = 7,111.14/x
  3. Step 3: Cross multiply
    13,079.48x = 18,049.68 × 7,111.14
  4. Step 4: Simplify right side
    13,079.48x = 128,353,801.44
  5. Step 5: Solve for x
    x = 128,353,801.44/13,079.48
  6. Step 6: Final answer
    x = 9,813.37

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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.