Home / 20,865.14-28,793.70-11,304.80

Finding the Fourth Proportional to 20,865.14, 28,793.70 and 11,304.80

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Solution

The fourth proportional to 20,865.14, 28,793.70 and 11,304.80 is: 15,600.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.14 : 28,793.70 = 11,304.80 : x
  2. Step 2: Convert to fraction form
    20,865.14/28,793.70 = 11,304.80/x
  3. Step 3: Cross multiply
    20,865.14x = 28,793.70 × 11,304.80
  4. Step 4: Simplify right side
    20,865.14x = 325,507,019.76
  5. Step 5: Solve for x
    x = 325,507,019.76/20,865.14
  6. Step 6: Final answer
    x = 15,600.52

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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.