Home / 20,481.52-30,724.20-15,869.68

Finding the Fourth Proportional to 20,481.52, 30,724.20 and 15,869.68

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Solution

The fourth proportional to 20,481.52, 30,724.20 and 15,869.68 is: 23,806.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.52 : 30,724.20 = 15,869.68 : x
  2. Step 2: Convert to fraction form
    20,481.52/30,724.20 = 15,869.68/x
  3. Step 3: Cross multiply
    20,481.52x = 30,724.20 × 15,869.68
  4. Step 4: Simplify right side
    20,481.52x = 487,583,222.26
  5. Step 5: Solve for x
    x = 487,583,222.26/20,481.52
  6. Step 6: Final answer
    x = 23,806.01

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1.5x scale

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.