Home / 20,592.39-28,422.59-13,528.38

Finding the Fourth Proportional to 20,592.39, 28,422.59 and 13,528.38

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Solution

The fourth proportional to 20,592.39, 28,422.59 and 13,528.38 is: 18,672.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,592.39 : 28,422.59 = 13,528.38 : x
  2. Step 2: Convert to fraction form
    20,592.39/28,422.59 = 13,528.38/x
  3. Step 3: Cross multiply
    20,592.39x = 28,422.59 × 13,528.38
  4. Step 4: Simplify right side
    20,592.39x = 384,511,530.46
  5. Step 5: Solve for x
    x = 384,511,530.46/20,592.39
  6. Step 6: Final answer
    x = 18,672.51

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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.