Home / 13,151.57-18,148.93-7,183.10

Finding the Fourth Proportional to 13,151.57, 18,148.93 and 7,183.10

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Solution

The fourth proportional to 13,151.57, 18,148.93 and 7,183.10 is: 9,912.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.57 : 18,148.93 = 7,183.10 : x
  2. Step 2: Convert to fraction form
    13,151.57/18,148.93 = 7,183.10/x
  3. Step 3: Cross multiply
    13,151.57x = 18,148.93 × 7,183.10
  4. Step 4: Simplify right side
    13,151.57x = 130,365,606.50
  5. Step 5: Solve for x
    x = 130,365,606.50/13,151.57
  6. Step 6: Final answer
    x = 9,912.55

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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.