Home / 13,988.97-19,218.43-12,516.39

Finding the Fourth Proportional to 13,988.97, 19,218.43 and 12,516.39

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Solution

The fourth proportional to 13,988.97, 19,218.43 and 12,516.39 is: 17,195.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.97 : 19,218.43 = 12,516.39 : x
  2. Step 2: Convert to fraction form
    13,988.97/19,218.43 = 12,516.39/x
  3. Step 3: Cross multiply
    13,988.97x = 19,218.43 × 12,516.39
  4. Step 4: Simplify right side
    13,988.97x = 240,545,333.78
  5. Step 5: Solve for x
    x = 240,545,333.78/13,988.97
  6. Step 6: Final answer
    x = 17,195.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.