Home / 28,502.75-42,698.76-13,722.05

Finding the Fourth Proportional to 28,502.75, 42,698.76 and 13,722.05

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Solution

The fourth proportional to 28,502.75, 42,698.76 and 13,722.05 is: 20,556.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.75 : 42,698.76 = 13,722.05 : x
  2. Step 2: Convert to fraction form
    28,502.75/42,698.76 = 13,722.05/x
  3. Step 3: Cross multiply
    28,502.75x = 42,698.76 × 13,722.05
  4. Step 4: Simplify right side
    28,502.75x = 585,914,306.16
  5. Step 5: Solve for x
    x = 585,914,306.16/28,502.75
  6. Step 6: Final answer
    x = 20,556.42

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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.