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Finding the Fourth Proportional to 19,377.48, 26,751.81 and 12,669.88

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Solution

The fourth proportional to 19,377.48, 26,751.81 and 12,669.88 is: 17,491.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,377.48 : 26,751.81 = 12,669.88 : x
  2. Step 2: Convert to fraction form
    19,377.48/26,751.81 = 12,669.88/x
  3. Step 3: Cross multiply
    19,377.48x = 26,751.81 × 12,669.88
  4. Step 4: Simplify right side
    19,377.48x = 338,942,222.48
  5. Step 5: Solve for x
    x = 338,942,222.48/19,377.48
  6. Step 6: Final answer
    x = 17,491.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.