Home / 18,381.83-25,366.95-9,998.33

Finding the Fourth Proportional to 18,381.83, 25,366.95 and 9,998.33

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Solution

The fourth proportional to 18,381.83, 25,366.95 and 9,998.33 is: 13,797.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.83 : 25,366.95 = 9,998.33 : x
  2. Step 2: Convert to fraction form
    18,381.83/25,366.95 = 9,998.33/x
  3. Step 3: Cross multiply
    18,381.83x = 25,366.95 × 9,998.33
  4. Step 4: Simplify right side
    18,381.83x = 253,627,137.19
  5. Step 5: Solve for x
    x = 253,627,137.19/18,381.83
  6. Step 6: Final answer
    x = 13,797.71

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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.