Home / 20,639.22-30,818.96-16,206.90

Finding the Fourth Proportional to 20,639.22, 30,818.96 and 16,206.90

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Solution

The fourth proportional to 20,639.22, 30,818.96 and 16,206.90 is: 24,200.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.22 : 30,818.96 = 16,206.90 : x
  2. Step 2: Convert to fraction form
    20,639.22/30,818.96 = 16,206.90/x
  3. Step 3: Cross multiply
    20,639.22x = 30,818.96 × 16,206.90
  4. Step 4: Simplify right side
    20,639.22x = 499,479,721.79
  5. Step 5: Solve for x
    x = 499,479,721.79/20,639.22
  6. Step 6: Final answer
    x = 24,200.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.