Home / 19,701.74-27,198.43-15,215.42

Finding the Fourth Proportional to 19,701.74, 27,198.43 and 15,215.42

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Solution

The fourth proportional to 19,701.74, 27,198.43 and 15,215.42 is: 21,005.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,701.74 : 27,198.43 = 15,215.42 : x
  2. Step 2: Convert to fraction form
    19,701.74/27,198.43 = 15,215.42/x
  3. Step 3: Cross multiply
    19,701.74x = 27,198.43 × 15,215.42
  4. Step 4: Simplify right side
    19,701.74x = 413,835,361.76
  5. Step 5: Solve for x
    x = 413,835,361.76/19,701.74
  6. Step 6: Final answer
    x = 21,005.02

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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.