Home / 20,608.65-28,439.97-11,177.22

Finding the Fourth Proportional to 20,608.65, 28,439.97 and 11,177.22

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Solution

The fourth proportional to 20,608.65, 28,439.97 and 11,177.22 is: 15,424.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,608.65 : 28,439.97 = 11,177.22 : x
  2. Step 2: Convert to fraction form
    20,608.65/28,439.97 = 11,177.22/x
  3. Step 3: Cross multiply
    20,608.65x = 28,439.97 × 11,177.22
  4. Step 4: Simplify right side
    20,608.65x = 317,879,801.48
  5. Step 5: Solve for x
    x = 317,879,801.48/20,608.65
  6. Step 6: Final answer
    x = 15,424.58

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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.