Home / 20,451.55-30,667.50-12,132.65

Finding the Fourth Proportional to 20,451.55, 30,667.50 and 12,132.65

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Solution

The fourth proportional to 20,451.55, 30,667.50 and 12,132.65 is: 18,193.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.55 : 30,667.50 = 12,132.65 : x
  2. Step 2: Convert to fraction form
    20,451.55/30,667.50 = 12,132.65/x
  3. Step 3: Cross multiply
    20,451.55x = 30,667.50 × 12,132.65
  4. Step 4: Simplify right side
    20,451.55x = 372,077,890.54
  5. Step 5: Solve for x
    x = 372,077,890.54/20,451.55
  6. Step 6: Final answer
    x = 18,193.14

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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.