Home / 12,615.12-17,282.80-12,142.19

Finding the Fourth Proportional to 12,615.12, 17,282.80 and 12,142.19

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Solution

The fourth proportional to 12,615.12, 17,282.80 and 12,142.19 is: 16,634.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.12 : 17,282.80 = 12,142.19 : x
  2. Step 2: Convert to fraction form
    12,615.12/17,282.80 = 12,142.19/x
  3. Step 3: Cross multiply
    12,615.12x = 17,282.80 × 12,142.19
  4. Step 4: Simplify right side
    12,615.12x = 209,850,924.56
  5. Step 5: Solve for x
    x = 209,850,924.56/12,615.12
  6. Step 6: Final answer
    x = 16,634.87

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.