Home / 10,958.76-15,135.66-7,987.86

Finding the Fourth Proportional to 10,958.76, 15,135.66 and 7,987.86

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Solution

The fourth proportional to 10,958.76, 15,135.66 and 7,987.86 is: 11,032.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,958.76 : 15,135.66 = 7,987.86 : x
  2. Step 2: Convert to fraction form
    10,958.76/15,135.66 = 7,987.86/x
  3. Step 3: Cross multiply
    10,958.76x = 15,135.66 × 7,987.86
  4. Step 4: Simplify right side
    10,958.76x = 120,901,533.09
  5. Step 5: Solve for x
    x = 120,901,533.09/10,958.76
  6. Step 6: Final answer
    x = 11,032.41

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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.