Home / 38,643.32-57,942.75-20,609.30

Finding the Fourth Proportional to 38,643.32, 57,942.75 and 20,609.30

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Solution

The fourth proportional to 38,643.32, 57,942.75 and 20,609.30 is: 30,902.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,643.32 : 57,942.75 = 20,609.30 : x
  2. Step 2: Convert to fraction form
    38,643.32/57,942.75 = 20,609.30/x
  3. Step 3: Cross multiply
    38,643.32x = 57,942.75 × 20,609.30
  4. Step 4: Simplify right side
    38,643.32x = 1,194,159,517.58
  5. Step 5: Solve for x
    x = 1,194,159,517.58/38,643.32
  6. Step 6: Final answer
    x = 30,902.09

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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.