Home / 20,672.17-28,532.27-12,608.55

Finding the Fourth Proportional to 20,672.17, 28,532.27 and 12,608.55

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Solution

The fourth proportional to 20,672.17, 28,532.27 and 12,608.55 is: 17,402.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.17 : 28,532.27 = 12,608.55 : x
  2. Step 2: Convert to fraction form
    20,672.17/28,532.27 = 12,608.55/x
  3. Step 3: Cross multiply
    20,672.17x = 28,532.27 × 12,608.55
  4. Step 4: Simplify right side
    20,672.17x = 359,750,584.43
  5. Step 5: Solve for x
    x = 359,750,584.43/20,672.17
  6. Step 6: Final answer
    x = 17,402.65

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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.