Home / 20,680.24-28,539.03-11,248.83

Finding the Fourth Proportional to 20,680.24, 28,539.03 and 11,248.83

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Solution

The fourth proportional to 20,680.24, 28,539.03 and 11,248.83 is: 15,523.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.24 : 28,539.03 = 11,248.83 : x
  2. Step 2: Convert to fraction form
    20,680.24/28,539.03 = 11,248.83/x
  3. Step 3: Cross multiply
    20,680.24x = 28,539.03 × 11,248.83
  4. Step 4: Simplify right side
    20,680.24x = 321,030,696.83
  5. Step 5: Solve for x
    x = 321,030,696.83/20,680.24
  6. Step 6: Final answer
    x = 15,523.55

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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.