Home / 18,370.75-25,351.82-9,987.43

Finding the Fourth Proportional to 18,370.75, 25,351.82 and 9,987.43

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Solution

The fourth proportional to 18,370.75, 25,351.82 and 9,987.43 is: 13,782.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,370.75 : 25,351.82 = 9,987.43 : x
  2. Step 2: Convert to fraction form
    18,370.75/25,351.82 = 9,987.43/x
  3. Step 3: Cross multiply
    18,370.75x = 25,351.82 × 9,987.43
  4. Step 4: Simplify right side
    18,370.75x = 253,199,527.62
  5. Step 5: Solve for x
    x = 253,199,527.62/18,370.75
  6. Step 6: Final answer
    x = 13,782.75

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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.