Home / 31,282.47-43,189.70-20,546.39

Finding the Fourth Proportional to 31,282.47, 43,189.70 and 20,546.39

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Solution

The fourth proportional to 31,282.47, 43,189.70 and 20,546.39 is: 28,367.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,282.47 : 43,189.70 = 20,546.39 : x
  2. Step 2: Convert to fraction form
    31,282.47/43,189.70 = 20,546.39/x
  3. Step 3: Cross multiply
    31,282.47x = 43,189.70 × 20,546.39
  4. Step 4: Simplify right side
    31,282.47x = 887,392,425.43
  5. Step 5: Solve for x
    x = 887,392,425.43/31,282.47
  6. Step 6: Final answer
    x = 28,367.08

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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.