Home / 19,721.42-27,211.97-11,656.43

Finding the Fourth Proportional to 19,721.42, 27,211.97 and 11,656.43

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Solution

The fourth proportional to 19,721.42, 27,211.97 and 11,656.43 is: 16,083.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.42 : 27,211.97 = 11,656.43 : x
  2. Step 2: Convert to fraction form
    19,721.42/27,211.97 = 11,656.43/x
  3. Step 3: Cross multiply
    19,721.42x = 27,211.97 × 11,656.43
  4. Step 4: Simplify right side
    19,721.42x = 317,194,445.92
  5. Step 5: Solve for x
    x = 317,194,445.92/19,721.42
  6. Step 6: Final answer
    x = 16,083.75

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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.