Home / 20,458.34-30,687.88-6,418.04

Finding the Fourth Proportional to 20,458.34, 30,687.88 and 6,418.04

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Solution

The fourth proportional to 20,458.34, 30,687.88 and 6,418.04 is: 9,627.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.34 : 30,687.88 = 6,418.04 : x
  2. Step 2: Convert to fraction form
    20,458.34/30,687.88 = 6,418.04/x
  3. Step 3: Cross multiply
    20,458.34x = 30,687.88 × 6,418.04
  4. Step 4: Simplify right side
    20,458.34x = 196,956,041.36
  5. Step 5: Solve for x
    x = 196,956,041.36/20,458.34
  6. Step 6: Final answer
    x = 9,627.18

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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.