Home / 19,701.36-27,177.12-12,619.80

Finding the Fourth Proportional to 19,701.36, 27,177.12 and 12,619.80

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Solution

The fourth proportional to 19,701.36, 27,177.12 and 12,619.80 is: 17,408.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,701.36 : 27,177.12 = 12,619.80 : x
  2. Step 2: Convert to fraction form
    19,701.36/27,177.12 = 12,619.80/x
  3. Step 3: Cross multiply
    19,701.36x = 27,177.12 × 12,619.80
  4. Step 4: Simplify right side
    19,701.36x = 342,969,818.98
  5. Step 5: Solve for x
    x = 342,969,818.98/19,701.36
  6. Step 6: Final answer
    x = 17,408.43

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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.