Home / 20,309.35-30,464.65-5,518.58

Finding the Fourth Proportional to 20,309.35, 30,464.65 and 5,518.58

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Solution

The fourth proportional to 20,309.35, 30,464.65 and 5,518.58 is: 8,278.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.35 : 30,464.65 = 5,518.58 : x
  2. Step 2: Convert to fraction form
    20,309.35/30,464.65 = 5,518.58/x
  3. Step 3: Cross multiply
    20,309.35x = 30,464.65 × 5,518.58
  4. Step 4: Simplify right side
    20,309.35x = 168,121,618.61
  5. Step 5: Solve for x
    x = 168,121,618.61/20,309.35
  6. Step 6: Final answer
    x = 8,278.04

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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.