Home / 20,002.72-29,988.92-12,103.48

Finding the Fourth Proportional to 20,002.72, 29,988.92 and 12,103.48

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Solution

The fourth proportional to 20,002.72, 29,988.92 and 12,103.48 is: 18,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,002.72 : 29,988.92 = 12,103.48 : x
  2. Step 2: Convert to fraction form
    20,002.72/29,988.92 = 12,103.48/x
  3. Step 3: Cross multiply
    20,002.72x = 29,988.92 × 12,103.48
  4. Step 4: Simplify right side
    20,002.72x = 362,970,293.44
  5. Step 5: Solve for x
    x = 362,970,293.44/20,002.72
  6. Step 6: Final answer
    x = 18,146.05

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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.