Home / 19,391.52-29,072.70-13,135.80

Finding the Fourth Proportional to 19,391.52, 29,072.70 and 13,135.80

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Solution

The fourth proportional to 19,391.52, 29,072.70 and 13,135.80 is: 19,693.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,391.52 : 29,072.70 = 13,135.80 : x
  2. Step 2: Convert to fraction form
    19,391.52/29,072.70 = 13,135.80/x
  3. Step 3: Cross multiply
    19,391.52x = 29,072.70 × 13,135.80
  4. Step 4: Simplify right side
    19,391.52x = 381,893,172.66
  5. Step 5: Solve for x
    x = 381,893,172.66/19,391.52
  6. Step 6: Final answer
    x = 19,693.82

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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.