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Finding the Fourth Proportional to 28,227.84, 38,972.80 and 19,272.08

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Solution

The fourth proportional to 28,227.84, 38,972.80 and 19,272.08 is: 26,608.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,227.84 : 38,972.80 = 19,272.08 : x
  2. Step 2: Convert to fraction form
    28,227.84/38,972.80 = 19,272.08/x
  3. Step 3: Cross multiply
    28,227.84x = 38,972.80 × 19,272.08
  4. Step 4: Simplify right side
    28,227.84x = 751,086,919.42
  5. Step 5: Solve for x
    x = 751,086,919.42/28,227.84
  6. Step 6: Final answer
    x = 26,608.02

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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.