Home / 11,499.36-15,865.60-6,781.92

Finding the Fourth Proportional to 11,499.36, 15,865.60 and 6,781.92

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Solution

The fourth proportional to 11,499.36, 15,865.60 and 6,781.92 is: 9,356.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,499.36 : 15,865.60 = 6,781.92 : x
  2. Step 2: Convert to fraction form
    11,499.36/15,865.60 = 6,781.92/x
  3. Step 3: Cross multiply
    11,499.36x = 15,865.60 × 6,781.92
  4. Step 4: Simplify right side
    11,499.36x = 107,599,229.95
  5. Step 5: Solve for x
    x = 107,599,229.95/11,499.36
  6. Step 6: Final answer
    x = 9,356.98

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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.