Home / 12,615.38-17,283.15-12,142.43

Finding the Fourth Proportional to 12,615.38, 17,283.15 and 12,142.43

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Solution

The fourth proportional to 12,615.38, 17,283.15 and 12,142.43 is: 16,635.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.38 : 17,283.15 = 12,142.43 : x
  2. Step 2: Convert to fraction form
    12,615.38/17,283.15 = 12,142.43/x
  3. Step 3: Cross multiply
    12,615.38x = 17,283.15 × 12,142.43
  4. Step 4: Simplify right side
    12,615.38x = 209,859,365.49
  5. Step 5: Solve for x
    x = 209,859,365.49/12,615.38
  6. Step 6: Final answer
    x = 16,635.20

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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.