Home / 12,476.90-17,217.85-6,811.43

Finding the Fourth Proportional to 12,476.90, 17,217.85 and 6,811.43

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Solution

The fourth proportional to 12,476.90, 17,217.85 and 6,811.43 is: 9,399.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476.90 : 17,217.85 = 6,811.43 : x
  2. Step 2: Convert to fraction form
    12,476.90/17,217.85 = 6,811.43/x
  3. Step 3: Cross multiply
    12,476.90x = 17,217.85 × 6,811.43
  4. Step 4: Simplify right side
    12,476.90x = 117,278,206.04
  5. Step 5: Solve for x
    x = 117,278,206.04/12,476.90
  6. Step 6: Final answer
    x = 9,399.63

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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.