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Finding the Fourth Proportional to 17,959.81, 26,953.76 and 12,451.95

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Solution

The fourth proportional to 17,959.81, 26,953.76 and 12,451.95 is: 18,687.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,959.81 : 26,953.76 = 12,451.95 : x
  2. Step 2: Convert to fraction form
    17,959.81/26,953.76 = 12,451.95/x
  3. Step 3: Cross multiply
    17,959.81x = 26,953.76 × 12,451.95
  4. Step 4: Simplify right side
    17,959.81x = 335,626,871.83
  5. Step 5: Solve for x
    x = 335,626,871.83/17,959.81
  6. Step 6: Final answer
    x = 18,687.66

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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.