Home / 20,701.96-28,569.30-11,270.68

Finding the Fourth Proportional to 20,701.96, 28,569.30 and 11,270.68

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Solution

The fourth proportional to 20,701.96, 28,569.30 and 11,270.68 is: 15,553.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.96 : 28,569.30 = 11,270.68 : x
  2. Step 2: Convert to fraction form
    20,701.96/28,569.30 = 11,270.68/x
  3. Step 3: Cross multiply
    20,701.96x = 28,569.30 × 11,270.68
  4. Step 4: Simplify right side
    20,701.96x = 321,995,438.12
  5. Step 5: Solve for x
    x = 321,995,438.12/20,701.96
  6. Step 6: Final answer
    x = 15,553.86

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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.