Home / 11,991.60-16,541.28-9,334.80

Finding the Fourth Proportional to 11,991.60, 16,541.28 and 9,334.80

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Solution

The fourth proportional to 11,991.60, 16,541.28 and 9,334.80 is: 12,876.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.60 : 16,541.28 = 9,334.80 : x
  2. Step 2: Convert to fraction form
    11,991.60/16,541.28 = 9,334.80/x
  3. Step 3: Cross multiply
    11,991.60x = 16,541.28 × 9,334.80
  4. Step 4: Simplify right side
    11,991.60x = 154,409,540.54
  5. Step 5: Solve for x
    x = 154,409,540.54/11,991.60
  6. Step 6: Final answer
    x = 12,876.48

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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.