Home / 19,701.93-27,198.68-15,215.61

Finding the Fourth Proportional to 19,701.93, 27,198.68 and 15,215.61

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Solution

The fourth proportional to 19,701.93, 27,198.68 and 15,215.61 is: 21,005.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,701.93 : 27,198.68 = 15,215.61 : x
  2. Step 2: Convert to fraction form
    19,701.93/27,198.68 = 15,215.61/x
  3. Step 3: Cross multiply
    19,701.93x = 27,198.68 × 15,215.61
  4. Step 4: Simplify right side
    19,701.93x = 413,844,431.32
  5. Step 5: Solve for x
    x = 413,844,431.32/19,701.93
  6. Step 6: Final answer
    x = 21,005.27

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1.5x scale

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.