Home / 19,422-29,143.56-7,735.20

Finding the Fourth Proportional to 19,422, 29,143.56 and 7,735.20

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Solution

The fourth proportional to 19,422, 29,143.56 and 7,735.20 is: 11,607.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,422 : 29,143.56 = 7,735.20 : x
  2. Step 2: Convert to fraction form
    19,422/29,143.56 = 7,735.20/x
  3. Step 3: Cross multiply
    19,422x = 29,143.56 × 7,735.20
  4. Step 4: Simplify right side
    19,422x = 225,431,265.31
  5. Step 5: Solve for x
    x = 225,431,265.31/19,422
  6. Step 6: Final answer
    x = 11,607.01

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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.