Home / 20,245.08-27,938.36-12,282

Finding the Fourth Proportional to 20,245.08, 27,938.36 and 12,282

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Solution

The fourth proportional to 20,245.08, 27,938.36 and 12,282 is: 16,949.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.08 : 27,938.36 = 12,282 : x
  2. Step 2: Convert to fraction form
    20,245.08/27,938.36 = 12,282/x
  3. Step 3: Cross multiply
    20,245.08x = 27,938.36 × 12,282
  4. Step 4: Simplify right side
    20,245.08x = 343,138,937.52
  5. Step 5: Solve for x
    x = 343,138,937.52/20,245.08
  6. Step 6: Final answer
    x = 16,949.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.