Home / 20,431.22-30,646.20-5,641.04

Finding the Fourth Proportional to 20,431.22, 30,646.20 and 5,641.04

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Solution

The fourth proportional to 20,431.22, 30,646.20 and 5,641.04 is: 8,461.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.22 : 30,646.20 = 5,641.04 : x
  2. Step 2: Convert to fraction form
    20,431.22/30,646.20 = 5,641.04/x
  3. Step 3: Cross multiply
    20,431.22x = 30,646.20 × 5,641.04
  4. Step 4: Simplify right side
    20,431.22x = 172,876,440.05
  5. Step 5: Solve for x
    x = 172,876,440.05/20,431.22
  6. Step 6: Final answer
    x = 8,461.39

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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.