Home / 20,305.69-30,446.35-8,445.20

Finding the Fourth Proportional to 20,305.69, 30,446.35 and 8,445.20

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Solution

The fourth proportional to 20,305.69, 30,446.35 and 8,445.20 is: 12,662.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.69 : 30,446.35 = 8,445.20 : x
  2. Step 2: Convert to fraction form
    20,305.69/30,446.35 = 8,445.20/x
  3. Step 3: Cross multiply
    20,305.69x = 30,446.35 × 8,445.20
  4. Step 4: Simplify right side
    20,305.69x = 257,125,341.68
  5. Step 5: Solve for x
    x = 257,125,341.68/20,305.69
  6. Step 6: Final answer
    x = 12,662.73

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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.