Home / 19,399.40-29,076.36-8,989.28

Finding the Fourth Proportional to 19,399.40, 29,076.36 and 8,989.28

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Solution

The fourth proportional to 19,399.40, 29,076.36 and 8,989.28 is: 13,473.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,399.40 : 29,076.36 = 8,989.28 : x
  2. Step 2: Convert to fraction form
    19,399.40/29,076.36 = 8,989.28/x
  3. Step 3: Cross multiply
    19,399.40x = 29,076.36 × 8,989.28
  4. Step 4: Simplify right side
    19,399.40x = 261,375,541.42
  5. Step 5: Solve for x
    x = 261,375,541.42/19,399.40
  6. Step 6: Final answer
    x = 13,473.38

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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.