Home / 13,153.92-18,133.56-8,114.76

Finding the Fourth Proportional to 13,153.92, 18,133.56 and 8,114.76

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Solution

The fourth proportional to 13,153.92, 18,133.56 and 8,114.76 is: 11,186.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.92 : 18,133.56 = 8,114.76 : x
  2. Step 2: Convert to fraction form
    13,153.92/18,133.56 = 8,114.76/x
  3. Step 3: Cross multiply
    13,153.92x = 18,133.56 × 8,114.76
  4. Step 4: Simplify right side
    13,153.92x = 147,149,487.35
  5. Step 5: Solve for x
    x = 147,149,487.35/13,153.92
  6. Step 6: Final answer
    x = 11,186.74

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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.