Home / 20,439.22-30,626.47-15,770.66

Finding the Fourth Proportional to 20,439.22, 30,626.47 and 15,770.66

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Solution

The fourth proportional to 20,439.22, 30,626.47 and 15,770.66 is: 23,631.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.22 : 30,626.47 = 15,770.66 : x
  2. Step 2: Convert to fraction form
    20,439.22/30,626.47 = 15,770.66/x
  3. Step 3: Cross multiply
    20,439.22x = 30,626.47 × 15,770.66
  4. Step 4: Simplify right side
    20,439.22x = 482,999,660.76
  5. Step 5: Solve for x
    x = 482,999,660.76/20,439.22
  6. Step 6: Final answer
    x = 23,631.02

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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.