Home / 12,612.88-17,407.20-8,134.84

Finding the Fourth Proportional to 12,612.88, 17,407.20 and 8,134.84

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Solution

The fourth proportional to 12,612.88, 17,407.20 and 8,134.84 is: 11,227.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.88 : 17,407.20 = 8,134.84 : x
  2. Step 2: Convert to fraction form
    12,612.88/17,407.20 = 8,134.84/x
  3. Step 3: Cross multiply
    12,612.88x = 17,407.20 × 8,134.84
  4. Step 4: Simplify right side
    12,612.88x = 141,604,786.85
  5. Step 5: Solve for x
    x = 141,604,786.85/12,612.88
  6. Step 6: Final answer
    x = 11,227.00

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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.