Home / 11,873.28-16,382.40-7,155.84

Finding the Fourth Proportional to 11,873.28, 16,382.40 and 7,155.84

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Solution

The fourth proportional to 11,873.28, 16,382.40 and 7,155.84 is: 9,873.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,873.28 : 16,382.40 = 7,155.84 : x
  2. Step 2: Convert to fraction form
    11,873.28/16,382.40 = 7,155.84/x
  3. Step 3: Cross multiply
    11,873.28x = 16,382.40 × 7,155.84
  4. Step 4: Simplify right side
    11,873.28x = 117,229,833.22
  5. Step 5: Solve for x
    x = 117,229,833.22/11,873.28
  6. Step 6: Final answer
    x = 9,873.42

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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.