Home / 19,913.38-29,858.56-11,916.11

Finding the Fourth Proportional to 19,913.38, 29,858.56 and 11,916.11

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Solution

The fourth proportional to 19,913.38, 29,858.56 and 11,916.11 is: 17,867.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,913.38 : 29,858.56 = 11,916.11 : x
  2. Step 2: Convert to fraction form
    19,913.38/29,858.56 = 11,916.11/x
  3. Step 3: Cross multiply
    19,913.38x = 29,858.56 × 11,916.11
  4. Step 4: Simplify right side
    19,913.38x = 355,797,930.26
  5. Step 5: Solve for x
    x = 355,797,930.26/19,913.38
  6. Step 6: Final answer
    x = 17,867.28

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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.