Home / 18,380.40-25,364.22-9,996.90

Finding the Fourth Proportional to 18,380.40, 25,364.22 and 9,996.90

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Solution

The fourth proportional to 18,380.40, 25,364.22 and 9,996.90 is: 13,795.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,380.40 : 25,364.22 = 9,996.90 : x
  2. Step 2: Convert to fraction form
    18,380.40/25,364.22 = 9,996.90/x
  3. Step 3: Cross multiply
    18,380.40x = 25,364.22 × 9,996.90
  4. Step 4: Simplify right side
    18,380.40x = 253,563,570.92
  5. Step 5: Solve for x
    x = 253,563,570.92/18,380.40
  6. Step 6: Final answer
    x = 13,795.32

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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.