Home / 11,731.79-16,189.88-6,426.80

Finding the Fourth Proportional to 11,731.79, 16,189.88 and 6,426.80

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Solution

The fourth proportional to 11,731.79, 16,189.88 and 6,426.80 is: 8,868.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,731.79 : 16,189.88 = 6,426.80 : x
  2. Step 2: Convert to fraction form
    11,731.79/16,189.88 = 6,426.80/x
  3. Step 3: Cross multiply
    11,731.79x = 16,189.88 × 6,426.80
  4. Step 4: Simplify right side
    11,731.79x = 104,049,120.78
  5. Step 5: Solve for x
    x = 104,049,120.78/11,731.79
  6. Step 6: Final answer
    x = 8,868.99

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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.