Home / 12,453.31-17,186.30-7,149.84

Finding the Fourth Proportional to 12,453.31, 17,186.30 and 7,149.84

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Solution

The fourth proportional to 12,453.31, 17,186.30 and 7,149.84 is: 9,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.31 : 17,186.30 = 7,149.84 : x
  2. Step 2: Convert to fraction form
    12,453.31/17,186.30 = 7,149.84/x
  3. Step 3: Cross multiply
    12,453.31x = 17,186.30 × 7,149.84
  4. Step 4: Simplify right side
    12,453.31x = 122,879,295.19
  5. Step 5: Solve for x
    x = 122,879,295.19/12,453.31
  6. Step 6: Final answer
    x = 9,867.20

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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.