Home / 21,006.62-28,979.69-14,198.46

Finding the Fourth Proportional to 21,006.62, 28,979.69 and 14,198.46

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Solution

The fourth proportional to 21,006.62, 28,979.69 and 14,198.46 is: 19,587.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.62 : 28,979.69 = 14,198.46 : x
  2. Step 2: Convert to fraction form
    21,006.62/28,979.69 = 14,198.46/x
  3. Step 3: Cross multiply
    21,006.62x = 28,979.69 × 14,198.46
  4. Step 4: Simplify right side
    21,006.62x = 411,466,969.28
  5. Step 5: Solve for x
    x = 411,466,969.28/21,006.62
  6. Step 6: Final answer
    x = 19,587.49

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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.