Home / 13,703.47-18,908.30-8,324.80

Finding the Fourth Proportional to 13,703.47, 18,908.30 and 8,324.80

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Solution

The fourth proportional to 13,703.47, 18,908.30 and 8,324.80 is: 11,486.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703.47 : 18,908.30 = 8,324.80 : x
  2. Step 2: Convert to fraction form
    13,703.47/18,908.30 = 8,324.80/x
  3. Step 3: Cross multiply
    13,703.47x = 18,908.30 × 8,324.80
  4. Step 4: Simplify right side
    13,703.47x = 157,407,789.38
  5. Step 5: Solve for x
    x = 157,407,789.38/13,703.47
  6. Step 6: Final answer
    x = 11,486.71

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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.