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Finding the Fourth Proportional to 27,118.94, 40,669.03 and 12,885.77

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Solution

The fourth proportional to 27,118.94, 40,669.03 and 12,885.77 is: 19,324.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,118.94 : 40,669.03 = 12,885.77 : x
  2. Step 2: Convert to fraction form
    27,118.94/40,669.03 = 12,885.77/x
  3. Step 3: Cross multiply
    27,118.94x = 40,669.03 × 12,885.77
  4. Step 4: Simplify right side
    27,118.94x = 524,051,531.14
  5. Step 5: Solve for x
    x = 524,051,531.14/27,118.94
  6. Step 6: Final answer
    x = 19,324.19

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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.