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Finding the Fourth Proportional to 12,808.29, 19,203.19 and 8,637.87

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Solution

The fourth proportional to 12,808.29, 19,203.19 and 8,637.87 is: 12,950.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.29 : 19,203.19 = 8,637.87 : x
  2. Step 2: Convert to fraction form
    12,808.29/19,203.19 = 8,637.87/x
  3. Step 3: Cross multiply
    12,808.29x = 19,203.19 × 8,637.87
  4. Step 4: Simplify right side
    12,808.29x = 165,874,757.81
  5. Step 5: Solve for x
    x = 165,874,757.81/12,808.29
  6. Step 6: Final answer
    x = 12,950.57

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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.