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Finding the Fourth Proportional to 12,710.61, 19,048.38 and 9,172.41

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Solution

The fourth proportional to 12,710.61, 19,048.38 and 9,172.41 is: 13,745.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,710.61 : 19,048.38 = 9,172.41 : x
  2. Step 2: Convert to fraction form
    12,710.61/19,048.38 = 9,172.41/x
  3. Step 3: Cross multiply
    12,710.61x = 19,048.38 × 9,172.41
  4. Step 4: Simplify right side
    12,710.61x = 174,719,551.20
  5. Step 5: Solve for x
    x = 174,719,551.20/12,710.61
  6. Step 6: Final answer
    x = 13,745.96

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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.