Home / 13,103.47-19,621.69-8,647.66

Finding the Fourth Proportional to 13,103.47, 19,621.69 and 8,647.66

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Solution

The fourth proportional to 13,103.47, 19,621.69 and 8,647.66 is: 12,949.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.47 : 19,621.69 = 8,647.66 : x
  2. Step 2: Convert to fraction form
    13,103.47/19,621.69 = 8,647.66/x
  3. Step 3: Cross multiply
    13,103.47x = 19,621.69 × 8,647.66
  4. Step 4: Simplify right side
    13,103.47x = 169,681,755.30
  5. Step 5: Solve for x
    x = 169,681,755.30/13,103.47
  6. Step 6: Final answer
    x = 12,949.37

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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.