Home / 20,216.20-30,324.30-12,853.30

Finding the Fourth Proportional to 20,216.20, 30,324.30 and 12,853.30

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Solution

The fourth proportional to 20,216.20, 30,324.30 and 12,853.30 is: 19,279.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.20 : 30,324.30 = 12,853.30 : x
  2. Step 2: Convert to fraction form
    20,216.20/30,324.30 = 12,853.30/x
  3. Step 3: Cross multiply
    20,216.20x = 30,324.30 × 12,853.30
  4. Step 4: Simplify right side
    20,216.20x = 389,767,325.19
  5. Step 5: Solve for x
    x = 389,767,325.19/20,216.20
  6. Step 6: Final answer
    x = 19,279.95

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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.