Home / 19,867.72-29,800.97-8,172.13

Finding the Fourth Proportional to 19,867.72, 29,800.97 and 8,172.13

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Solution

The fourth proportional to 19,867.72, 29,800.97 and 8,172.13 is: 12,257.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,867.72 : 29,800.97 = 8,172.13 : x
  2. Step 2: Convert to fraction form
    19,867.72/29,800.97 = 8,172.13/x
  3. Step 3: Cross multiply
    19,867.72x = 29,800.97 × 8,172.13
  4. Step 4: Simplify right side
    19,867.72x = 243,537,360.11
  5. Step 5: Solve for x
    x = 243,537,360.11/19,867.72
  6. Step 6: Final answer
    x = 12,257.94

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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.