Home / 39,677.73-54,755.18-21,528.44

Finding the Fourth Proportional to 39,677.73, 54,755.18 and 21,528.44

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Solution

The fourth proportional to 39,677.73, 54,755.18 and 21,528.44 is: 29,709.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,677.73 : 54,755.18 = 21,528.44 : x
  2. Step 2: Convert to fraction form
    39,677.73/54,755.18 = 21,528.44/x
  3. Step 3: Cross multiply
    39,677.73x = 54,755.18 × 21,528.44
  4. Step 4: Simplify right side
    39,677.73x = 1,178,793,824.94
  5. Step 5: Solve for x
    x = 1,178,793,824.94/39,677.73
  6. Step 6: Final answer
    x = 29,709.21

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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.