Home / 20,722.53-28,585.26-12,759.15

Finding the Fourth Proportional to 20,722.53, 28,585.26 and 12,759.15

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Solution

The fourth proportional to 20,722.53, 28,585.26 and 12,759.15 is: 17,600.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.53 : 28,585.26 = 12,759.15 : x
  2. Step 2: Convert to fraction form
    20,722.53/28,585.26 = 12,759.15/x
  3. Step 3: Cross multiply
    20,722.53x = 28,585.26 × 12,759.15
  4. Step 4: Simplify right side
    20,722.53x = 364,723,620.13
  5. Step 5: Solve for x
    x = 364,723,620.13/20,722.53
  6. Step 6: Final answer
    x = 17,600.34

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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.