Home / 20,001.72-30,002.47-8,155.44

Finding the Fourth Proportional to 20,001.72, 30,002.47 and 8,155.44

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Solution

The fourth proportional to 20,001.72, 30,002.47 and 8,155.44 is: 12,233.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,001.72 : 30,002.47 = 8,155.44 : x
  2. Step 2: Convert to fraction form
    20,001.72/30,002.47 = 8,155.44/x
  3. Step 3: Cross multiply
    20,001.72x = 30,002.47 × 8,155.44
  4. Step 4: Simplify right side
    20,001.72x = 244,683,436.06
  5. Step 5: Solve for x
    x = 244,683,436.06/20,001.72
  6. Step 6: Final answer
    x = 12,233.12

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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.