Home / 13,240.92-18,273.42-8,756.92

Finding the Fourth Proportional to 13,240.92, 18,273.42 and 8,756.92

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Solution

The fourth proportional to 13,240.92, 18,273.42 and 8,756.92 is: 12,085.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.92 : 18,273.42 = 8,756.92 : x
  2. Step 2: Convert to fraction form
    13,240.92/18,273.42 = 8,756.92/x
  3. Step 3: Cross multiply
    13,240.92x = 18,273.42 × 8,756.92
  4. Step 4: Simplify right side
    13,240.92x = 160,018,877.07
  5. Step 5: Solve for x
    x = 160,018,877.07/13,240.92
  6. Step 6: Final answer
    x = 12,085.18

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Half scale
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Double scale
Find fourth proportional to 13,241.92, 18,274.80 and 8,757.92
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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.