Home / 12,172.44-16,798.26-7,139.88

Finding the Fourth Proportional to 12,172.44, 16,798.26 and 7,139.88

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Solution

The fourth proportional to 12,172.44, 16,798.26 and 7,139.88 is: 9,853.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.44 : 16,798.26 = 7,139.88 : x
  2. Step 2: Convert to fraction form
    12,172.44/16,798.26 = 7,139.88/x
  3. Step 3: Cross multiply
    12,172.44x = 16,798.26 × 7,139.88
  4. Step 4: Simplify right side
    12,172.44x = 119,937,560.61
  5. Step 5: Solve for x
    x = 119,937,560.61/12,172.44
  6. Step 6: Final answer
    x = 9,853.21

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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.