Home / 20,319.23-30,451.16-12,424.50

Finding the Fourth Proportional to 20,319.23, 30,451.16 and 12,424.50

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Solution

The fourth proportional to 20,319.23, 30,451.16 and 12,424.50 is: 18,619.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.23 : 30,451.16 = 12,424.50 : x
  2. Step 2: Convert to fraction form
    20,319.23/30,451.16 = 12,424.50/x
  3. Step 3: Cross multiply
    20,319.23x = 30,451.16 × 12,424.50
  4. Step 4: Simplify right side
    20,319.23x = 378,340,375.30
  5. Step 5: Solve for x
    x = 378,340,375.30/20,319.23
  6. Step 6: Final answer
    x = 18,619.82

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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.