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Finding the Fourth Proportional to 19,851.46, 29,780.44 and 7,371.52

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Solution

The fourth proportional to 19,851.46, 29,780.44 and 7,371.52 is: 11,058.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,851.46 : 29,780.44 = 7,371.52 : x
  2. Step 2: Convert to fraction form
    19,851.46/29,780.44 = 7,371.52/x
  3. Step 3: Cross multiply
    19,851.46x = 29,780.44 × 7,371.52
  4. Step 4: Simplify right side
    19,851.46x = 219,527,109.07
  5. Step 5: Solve for x
    x = 219,527,109.07/19,851.46
  6. Step 6: Final answer
    x = 11,058.49

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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.