Home / 19,629.56-29,447.10-7,147.28

Finding the Fourth Proportional to 19,629.56, 29,447.10 and 7,147.28

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Solution

The fourth proportional to 19,629.56, 29,447.10 and 7,147.28 is: 10,721.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,629.56 : 29,447.10 = 7,147.28 : x
  2. Step 2: Convert to fraction form
    19,629.56/29,447.10 = 7,147.28/x
  3. Step 3: Cross multiply
    19,629.56x = 29,447.10 × 7,147.28
  4. Step 4: Simplify right side
    19,629.56x = 210,466,521.65
  5. Step 5: Solve for x
    x = 210,466,521.65/19,629.56
  6. Step 6: Final answer
    x = 10,721.92

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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.