Home / 9,987.38-13,781.58-5,511.32

Finding the Fourth Proportional to 9,987.38, 13,781.58 and 5,511.32

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Solution

The fourth proportional to 9,987.38, 13,781.58 and 5,511.32 is: 7,605.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.38 : 13,781.58 = 5,511.32 : x
  2. Step 2: Convert to fraction form
    9,987.38/13,781.58 = 5,511.32/x
  3. Step 3: Cross multiply
    9,987.38x = 13,781.58 × 5,511.32
  4. Step 4: Simplify right side
    9,987.38x = 75,954,697.49
  5. Step 5: Solve for x
    x = 75,954,697.49/9,987.38
  6. Step 6: Final answer
    x = 7,605.07

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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.