Home / 12,786.40-17,614.98-12,195.88

Finding the Fourth Proportional to 12,786.40, 17,614.98 and 12,195.88

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Solution

The fourth proportional to 12,786.40, 17,614.98 and 12,195.88 is: 16,801.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786.40 : 17,614.98 = 12,195.88 : x
  2. Step 2: Convert to fraction form
    12,786.40/17,614.98 = 12,195.88/x
  3. Step 3: Cross multiply
    12,786.40x = 17,614.98 × 12,195.88
  4. Step 4: Simplify right side
    12,786.40x = 214,830,182.28
  5. Step 5: Solve for x
    x = 214,830,182.28/12,786.40
  6. Step 6: Final answer
    x = 16,801.46

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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.