Home / 11,731.95-16,189.68-6,426.72

Finding the Fourth Proportional to 11,731.95, 16,189.68 and 6,426.72

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Solution

The fourth proportional to 11,731.95, 16,189.68 and 6,426.72 is: 8,868.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,731.95 : 16,189.68 = 6,426.72 : x
  2. Step 2: Convert to fraction form
    11,731.95/16,189.68 = 6,426.72/x
  3. Step 3: Cross multiply
    11,731.95x = 16,189.68 × 6,426.72
  4. Step 4: Simplify right side
    11,731.95x = 104,046,540.25
  5. Step 5: Solve for x
    x = 104,046,540.25/11,731.95
  6. Step 6: Final answer
    x = 8,868.65

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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.