Home / 12,153.06-18,198.60-9,691.47

Finding the Fourth Proportional to 12,153.06, 18,198.60 and 9,691.47

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Solution

The fourth proportional to 12,153.06, 18,198.60 and 9,691.47 is: 14,512.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153.06 : 18,198.60 = 9,691.47 : x
  2. Step 2: Convert to fraction form
    12,153.06/18,198.60 = 9,691.47/x
  3. Step 3: Cross multiply
    12,153.06x = 18,198.60 × 9,691.47
  4. Step 4: Simplify right side
    12,153.06x = 176,371,185.94
  5. Step 5: Solve for x
    x = 176,371,185.94/12,153.06
  6. Step 6: Final answer
    x = 14,512.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.