Home / 20,006.10-30,009.15-12,132.90

Finding the Fourth Proportional to 20,006.10, 30,009.15 and 12,132.90

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Solution

The fourth proportional to 20,006.10, 30,009.15 and 12,132.90 is: 18,199.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,006.10 : 30,009.15 = 12,132.90 : x
  2. Step 2: Convert to fraction form
    20,006.10/30,009.15 = 12,132.90/x
  3. Step 3: Cross multiply
    20,006.10x = 30,009.15 × 12,132.90
  4. Step 4: Simplify right side
    20,006.10x = 364,098,016.04
  5. Step 5: Solve for x
    x = 364,098,016.04/20,006.10
  6. Step 6: Final answer
    x = 18,199.35

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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.