Home / 13,079.40-18,053.70-8,363.70

Finding the Fourth Proportional to 13,079.40, 18,053.70 and 8,363.70

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Solution

The fourth proportional to 13,079.40, 18,053.70 and 8,363.70 is: 11,544.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.40 : 18,053.70 = 8,363.70 : x
  2. Step 2: Convert to fraction form
    13,079.40/18,053.70 = 8,363.70/x
  3. Step 3: Cross multiply
    13,079.40x = 18,053.70 × 8,363.70
  4. Step 4: Simplify right side
    13,079.40x = 150,995,730.69
  5. Step 5: Solve for x
    x = 150,995,730.69/13,079.40
  6. Step 6: Final answer
    x = 11,544.55

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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.