Home / 28,121.58-38,806.17-16,483.20

Finding the Fourth Proportional to 28,121.58, 38,806.17 and 16,483.20

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Solution

The fourth proportional to 28,121.58, 38,806.17 and 16,483.20 is: 22,745.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.58 : 38,806.17 = 16,483.20 : x
  2. Step 2: Convert to fraction form
    28,121.58/38,806.17 = 16,483.20/x
  3. Step 3: Cross multiply
    28,121.58x = 38,806.17 × 16,483.20
  4. Step 4: Simplify right side
    28,121.58x = 639,649,861.34
  5. Step 5: Solve for x
    x = 639,649,861.34/28,121.58
  6. Step 6: Final answer
    x = 22,745.87

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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.