Home / 20,701.98-28,568.50-11,270.54

Finding the Fourth Proportional to 20,701.98, 28,568.50 and 11,270.54

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Solution

The fourth proportional to 20,701.98, 28,568.50 and 11,270.54 is: 15,553.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.98 : 28,568.50 = 11,270.54 : x
  2. Step 2: Convert to fraction form
    20,701.98/28,568.50 = 11,270.54/x
  3. Step 3: Cross multiply
    20,701.98x = 28,568.50 × 11,270.54
  4. Step 4: Simplify right side
    20,701.98x = 321,982,465.23
  5. Step 5: Solve for x
    x = 321,982,465.23/20,701.98
  6. Step 6: Final answer
    x = 15,553.22

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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.