Home / 20,375.39-30,573.62-8,685.47

Finding the Fourth Proportional to 20,375.39, 30,573.62 and 8,685.47

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Solution

The fourth proportional to 20,375.39, 30,573.62 and 8,685.47 is: 13,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.39 : 30,573.62 = 8,685.47 : x
  2. Step 2: Convert to fraction form
    20,375.39/30,573.62 = 8,685.47/x
  3. Step 3: Cross multiply
    20,375.39x = 30,573.62 × 8,685.47
  4. Step 4: Simplify right side
    20,375.39x = 265,546,259.30
  5. Step 5: Solve for x
    x = 265,546,259.30/20,375.39
  6. Step 6: Final answer
    x = 13,032.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.