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Finding the Fourth Proportional to 20,029.79, 30,000.90 and 10,152.11

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Solution

The fourth proportional to 20,029.79, 30,000.90 and 10,152.11 is: 15,205.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,029.79 : 30,000.90 = 10,152.11 : x
  2. Step 2: Convert to fraction form
    20,029.79/30,000.90 = 10,152.11/x
  3. Step 3: Cross multiply
    20,029.79x = 30,000.90 × 10,152.11
  4. Step 4: Simplify right side
    20,029.79x = 304,572,436.90
  5. Step 5: Solve for x
    x = 304,572,436.90/20,029.79
  6. Step 6: Final answer
    x = 15,205.97

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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.