Home / 12,651.30-17,474.24-8,685.54

Finding the Fourth Proportional to 12,651.30, 17,474.24 and 8,685.54

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Solution

The fourth proportional to 12,651.30, 17,474.24 and 8,685.54 is: 11,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651.30 : 17,474.24 = 8,685.54 : x
  2. Step 2: Convert to fraction form
    12,651.30/17,474.24 = 8,685.54/x
  3. Step 3: Cross multiply
    12,651.30x = 17,474.24 × 8,685.54
  4. Step 4: Simplify right side
    12,651.30x = 151,773,210.49
  5. Step 5: Solve for x
    x = 151,773,210.49/12,651.30
  6. Step 6: Final answer
    x = 11,996.65

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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.