Home / 10,187.38-15,281.07-7,993.09

Finding the Fourth Proportional to 10,187.38, 15,281.07 and 7,993.09

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Solution

The fourth proportional to 10,187.38, 15,281.07 and 7,993.09 is: 11,989.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,187.38 : 15,281.07 = 7,993.09 : x
  2. Step 2: Convert to fraction form
    10,187.38/15,281.07 = 7,993.09/x
  3. Step 3: Cross multiply
    10,187.38x = 15,281.07 × 7,993.09
  4. Step 4: Simplify right side
    10,187.38x = 122,142,967.81
  5. Step 5: Solve for x
    x = 122,142,967.81/10,187.38
  6. Step 6: Final answer
    x = 11,989.64

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.