Home / 20,757.90-28,637.24-13,589.58

Finding the Fourth Proportional to 20,757.90, 28,637.24 and 13,589.58

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Solution

The fourth proportional to 20,757.90, 28,637.24 and 13,589.58 is: 18,747.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.90 : 28,637.24 = 13,589.58 : x
  2. Step 2: Convert to fraction form
    20,757.90/28,637.24 = 13,589.58/x
  3. Step 3: Cross multiply
    20,757.90x = 28,637.24 × 13,589.58
  4. Step 4: Simplify right side
    20,757.90x = 389,168,063.96
  5. Step 5: Solve for x
    x = 389,168,063.96/20,757.90
  6. Step 6: Final answer
    x = 18,747.95

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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.