Home / 20,701.65-28,568.39-11,270.28

Finding the Fourth Proportional to 20,701.65, 28,568.39 and 11,270.28

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Solution

The fourth proportional to 20,701.65, 28,568.39 and 11,270.28 is: 15,553.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.65 : 28,568.39 = 11,270.28 : x
  2. Step 2: Convert to fraction form
    20,701.65/28,568.39 = 11,270.28/x
  3. Step 3: Cross multiply
    20,701.65x = 28,568.39 × 11,270.28
  4. Step 4: Simplify right side
    20,701.65x = 321,973,698.10
  5. Step 5: Solve for x
    x = 321,973,698.10/20,701.65
  6. Step 6: Final answer
    x = 15,553.05

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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.