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Finding the Fourth Proportional to 19,959.22, 29,938.97 and 8,862.89

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Solution

The fourth proportional to 19,959.22, 29,938.97 and 8,862.89 is: 13,294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.22 : 29,938.97 = 8,862.89 : x
  2. Step 2: Convert to fraction form
    19,959.22/29,938.97 = 8,862.89/x
  3. Step 3: Cross multiply
    19,959.22x = 29,938.97 × 8,862.89
  4. Step 4: Simplify right side
    19,959.22x = 265,345,828.36
  5. Step 5: Solve for x
    x = 265,345,828.36/19,959.22
  6. Step 6: Final answer
    x = 13,294.40

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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.