Home / 20,371.80-30,557.70-17,091.30

Finding the Fourth Proportional to 20,371.80, 30,557.70 and 17,091.30

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Solution

The fourth proportional to 20,371.80, 30,557.70 and 17,091.30 is: 25,636.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,371.80 : 30,557.70 = 17,091.30 : x
  2. Step 2: Convert to fraction form
    20,371.80/30,557.70 = 17,091.30/x
  3. Step 3: Cross multiply
    20,371.80x = 30,557.70 × 17,091.30
  4. Step 4: Simplify right side
    20,371.80x = 522,270,818.01
  5. Step 5: Solve for x
    x = 522,270,818.01/20,371.80
  6. Step 6: Final answer
    x = 25,636.95

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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.