Home / 11,965.38-16,513-6,660.18

Finding the Fourth Proportional to 11,965.38, 16,513 and 6,660.18

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Solution

The fourth proportional to 11,965.38, 16,513 and 6,660.18 is: 9,191.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,965.38 : 16,513 = 6,660.18 : x
  2. Step 2: Convert to fraction form
    11,965.38/16,513 = 6,660.18/x
  3. Step 3: Cross multiply
    11,965.38x = 16,513 × 6,660.18
  4. Step 4: Simplify right side
    11,965.38x = 109,979,552.34
  5. Step 5: Solve for x
    x = 109,979,552.34/11,965.38
  6. Step 6: Final answer
    x = 9,191.48

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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.