Home / 13,152.09-18,149.78-7,183.76

Finding the Fourth Proportional to 13,152.09, 18,149.78 and 7,183.76

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Solution

The fourth proportional to 13,152.09, 18,149.78 and 7,183.76 is: 9,913.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.09 : 18,149.78 = 7,183.76 : x
  2. Step 2: Convert to fraction form
    13,152.09/18,149.78 = 7,183.76/x
  3. Step 3: Cross multiply
    13,152.09x = 18,149.78 × 7,183.76
  4. Step 4: Simplify right side
    13,152.09x = 130,383,663.57
  5. Step 5: Solve for x
    x = 130,383,663.57/13,152.09
  6. Step 6: Final answer
    x = 9,913.53

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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.