Home / 18,373.96-25,356.34-9,990.44

Finding the Fourth Proportional to 18,373.96, 25,356.34 and 9,990.44

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Solution

The fourth proportional to 18,373.96, 25,356.34 and 9,990.44 is: 13,786.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373.96 : 25,356.34 = 9,990.44 : x
  2. Step 2: Convert to fraction form
    18,373.96/25,356.34 = 9,990.44/x
  3. Step 3: Cross multiply
    18,373.96x = 25,356.34 × 9,990.44
  4. Step 4: Simplify right side
    18,373.96x = 253,320,993.39
  5. Step 5: Solve for x
    x = 253,320,993.39/18,373.96
  6. Step 6: Final answer
    x = 13,786.96

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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.