Home / 20,924.68-28,877.62-13,759.24

Finding the Fourth Proportional to 20,924.68, 28,877.62 and 13,759.24

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Solution

The fourth proportional to 20,924.68, 28,877.62 and 13,759.24 is: 18,988.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.68 : 28,877.62 = 13,759.24 : x
  2. Step 2: Convert to fraction form
    20,924.68/28,877.62 = 13,759.24/x
  3. Step 3: Cross multiply
    20,924.68x = 28,877.62 × 13,759.24
  4. Step 4: Simplify right side
    20,924.68x = 397,334,104.21
  5. Step 5: Solve for x
    x = 397,334,104.21/20,924.68
  6. Step 6: Final answer
    x = 18,988.78

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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.