Home / 39,817.46-54,948.11-21,912.47

Finding the Fourth Proportional to 39,817.46, 54,948.11 and 21,912.47

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Solution

The fourth proportional to 39,817.46, 54,948.11 and 21,912.47 is: 30,239.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,817.46 : 54,948.11 = 21,912.47 : x
  2. Step 2: Convert to fraction form
    39,817.46/54,948.11 = 21,912.47/x
  3. Step 3: Cross multiply
    39,817.46x = 54,948.11 × 21,912.47
  4. Step 4: Simplify right side
    39,817.46x = 1,204,048,811.93
  5. Step 5: Solve for x
    x = 1,204,048,811.93/39,817.46
  6. Step 6: Final answer
    x = 30,239.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.