Home / 19,916.78-29,868.28-8,831.23

Finding the Fourth Proportional to 19,916.78, 29,868.28 and 8,831.23

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Solution

The fourth proportional to 19,916.78, 29,868.28 and 8,831.23 is: 13,243.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,916.78 : 29,868.28 = 8,831.23 : x
  2. Step 2: Convert to fraction form
    19,916.78/29,868.28 = 8,831.23/x
  3. Step 3: Cross multiply
    19,916.78x = 29,868.28 × 8,831.23
  4. Step 4: Simplify right side
    19,916.78x = 263,773,553.64
  5. Step 5: Solve for x
    x = 263,773,553.64/19,916.78
  6. Step 6: Final answer
    x = 13,243.79

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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.