Home / 20,146.38-30,216.32-14,285.22

Finding the Fourth Proportional to 20,146.38, 30,216.32 and 14,285.22

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Solution

The fourth proportional to 20,146.38, 30,216.32 and 14,285.22 is: 21,425.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146.38 : 30,216.32 = 14,285.22 : x
  2. Step 2: Convert to fraction form
    20,146.38/30,216.32 = 14,285.22/x
  3. Step 3: Cross multiply
    20,146.38x = 30,216.32 × 14,285.22
  4. Step 4: Simplify right side
    20,146.38x = 431,646,778.79
  5. Step 5: Solve for x
    x = 431,646,778.79/20,146.38
  6. Step 6: Final answer
    x = 21,425.53

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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.