Home / 20,701.98-30,957.57-15,375.21

Finding the Fourth Proportional to 20,701.98, 30,957.57 and 15,375.21

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Solution

The fourth proportional to 20,701.98, 30,957.57 and 15,375.21 is: 22,991.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.98 : 30,957.57 = 15,375.21 : x
  2. Step 2: Convert to fraction form
    20,701.98/30,957.57 = 15,375.21/x
  3. Step 3: Cross multiply
    20,701.98x = 30,957.57 × 15,375.21
  4. Step 4: Simplify right side
    20,701.98x = 475,979,139.84
  5. Step 5: Solve for x
    x = 475,979,139.84/20,701.98
  6. Step 6: Final answer
    x = 22,991.96

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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.