Home / 12,974.88-17,899.12-12,471.92

Finding the Fourth Proportional to 12,974.88, 17,899.12 and 12,471.92

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Solution

The fourth proportional to 12,974.88, 17,899.12 and 12,471.92 is: 17,205.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,974.88 : 17,899.12 = 12,471.92 : x
  2. Step 2: Convert to fraction form
    12,974.88/17,899.12 = 12,471.92/x
  3. Step 3: Cross multiply
    12,974.88x = 17,899.12 × 12,471.92
  4. Step 4: Simplify right side
    12,974.88x = 223,236,392.71
  5. Step 5: Solve for x
    x = 223,236,392.71/12,974.88
  6. Step 6: Final answer
    x = 17,205.28

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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.