Home / 20,759.52-28,638.72-12,255.87

Finding the Fourth Proportional to 20,759.52, 28,638.72 and 12,255.87

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Solution

The fourth proportional to 20,759.52, 28,638.72 and 12,255.87 is: 16,907.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.52 : 28,638.72 = 12,255.87 : x
  2. Step 2: Convert to fraction form
    20,759.52/28,638.72 = 12,255.87/x
  3. Step 3: Cross multiply
    20,759.52x = 28,638.72 × 12,255.87
  4. Step 4: Simplify right side
    20,759.52x = 350,992,429.29
  5. Step 5: Solve for x
    x = 350,992,429.29/20,759.52
  6. Step 6: Final answer
    x = 16,907.54

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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.