Home / 18,285.33-25,233.20-10,218.78

Finding the Fourth Proportional to 18,285.33, 25,233.20 and 10,218.78

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Solution

The fourth proportional to 18,285.33, 25,233.20 and 10,218.78 is: 14,101.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.33 : 25,233.20 = 10,218.78 : x
  2. Step 2: Convert to fraction form
    18,285.33/25,233.20 = 10,218.78/x
  3. Step 3: Cross multiply
    18,285.33x = 25,233.20 × 10,218.78
  4. Step 4: Simplify right side
    18,285.33x = 257,852,468.40
  5. Step 5: Solve for x
    x = 257,852,468.40/18,285.33
  6. Step 6: Final answer
    x = 14,101.60

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Half scale
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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.