Home / 20,539.43-28,348.97-13,356.84

Finding the Fourth Proportional to 20,539.43, 28,348.97 and 13,356.84

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Solution

The fourth proportional to 20,539.43, 28,348.97 and 13,356.84 is: 18,435.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.43 : 28,348.97 = 13,356.84 : x
  2. Step 2: Convert to fraction form
    20,539.43/28,348.97 = 13,356.84/x
  3. Step 3: Cross multiply
    20,539.43x = 28,348.97 × 13,356.84
  4. Step 4: Simplify right side
    20,539.43x = 378,652,589.67
  5. Step 5: Solve for x
    x = 378,652,589.67/20,539.43
  6. Step 6: Final answer
    x = 18,435.40

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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.