Home / 19,709.36-29,575.56-11,918.96

Finding the Fourth Proportional to 19,709.36, 29,575.56 and 11,918.96

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Solution

The fourth proportional to 19,709.36, 29,575.56 and 11,918.96 is: 17,885.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,709.36 : 29,575.56 = 11,918.96 : x
  2. Step 2: Convert to fraction form
    19,709.36/29,575.56 = 11,918.96/x
  3. Step 3: Cross multiply
    19,709.36x = 29,575.56 × 11,918.96
  4. Step 4: Simplify right side
    19,709.36x = 352,509,916.62
  5. Step 5: Solve for x
    x = 352,509,916.62/19,709.36
  6. Step 6: Final answer
    x = 17,885.41

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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.