Home / 13,151.56-18,148.68-7,183.12

Finding the Fourth Proportional to 13,151.56, 18,148.68 and 7,183.12

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Solution

The fourth proportional to 13,151.56, 18,148.68 and 7,183.12 is: 9,912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.56 : 18,148.68 = 7,183.12 : x
  2. Step 2: Convert to fraction form
    13,151.56/18,148.68 = 7,183.12/x
  3. Step 3: Cross multiply
    13,151.56x = 18,148.68 × 7,183.12
  4. Step 4: Simplify right side
    13,151.56x = 130,364,146.28
  5. Step 5: Solve for x
    x = 130,364,146.28/13,151.56
  6. Step 6: Final answer
    x = 9,912.45

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Half scale
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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.