Home / 20,508.88-28,294.66-12,009.55

Finding the Fourth Proportional to 20,508.88, 28,294.66 and 12,009.55

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Solution

The fourth proportional to 20,508.88, 28,294.66 and 12,009.55 is: 16,568.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.88 : 28,294.66 = 12,009.55 : x
  2. Step 2: Convert to fraction form
    20,508.88/28,294.66 = 12,009.55/x
  3. Step 3: Cross multiply
    20,508.88x = 28,294.66 × 12,009.55
  4. Step 4: Simplify right side
    20,508.88x = 339,806,134.00
  5. Step 5: Solve for x
    x = 339,806,134.00/20,508.88
  6. Step 6: Final answer
    x = 16,568.73

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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.