Home / 12,426.44-17,139.56-8,650.92

Finding the Fourth Proportional to 12,426.44, 17,139.56 and 8,650.92

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Solution

The fourth proportional to 12,426.44, 17,139.56 and 8,650.92 is: 11,932.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.44 : 17,139.56 = 8,650.92 : x
  2. Step 2: Convert to fraction form
    12,426.44/17,139.56 = 8,650.92/x
  3. Step 3: Cross multiply
    12,426.44x = 17,139.56 × 8,650.92
  4. Step 4: Simplify right side
    12,426.44x = 148,272,962.40
  5. Step 5: Solve for x
    x = 148,272,962.40/12,426.44
  6. Step 6: Final answer
    x = 11,932.05

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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.