Home / 19,912.16-29,869.68-6,759.20

Finding the Fourth Proportional to 19,912.16, 29,869.68 and 6,759.20

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Solution

The fourth proportional to 19,912.16, 29,869.68 and 6,759.20 is: 10,139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,912.16 : 29,869.68 = 6,759.20 : x
  2. Step 2: Convert to fraction form
    19,912.16/29,869.68 = 6,759.20/x
  3. Step 3: Cross multiply
    19,912.16x = 29,869.68 × 6,759.20
  4. Step 4: Simplify right side
    19,912.16x = 201,895,141.06
  5. Step 5: Solve for x
    x = 201,895,141.06/19,912.16
  6. Step 6: Final answer
    x = 10,139.29

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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.