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Finding the Fourth Proportional to 12,127.88, 18,199.12 and 12,029.06

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Solution

The fourth proportional to 12,127.88, 18,199.12 and 12,029.06 is: 18,050.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.88 : 18,199.12 = 12,029.06 : x
  2. Step 2: Convert to fraction form
    12,127.88/18,199.12 = 12,029.06/x
  3. Step 3: Cross multiply
    12,127.88x = 18,199.12 × 12,029.06
  4. Step 4: Simplify right side
    12,127.88x = 218,918,306.43
  5. Step 5: Solve for x
    x = 218,918,306.43/12,127.88
  6. Step 6: Final answer
    x = 18,050.83

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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.