Home / 38,781.29-53,516.97-21,787.39

Finding the Fourth Proportional to 38,781.29, 53,516.97 and 21,787.39

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Solution

The fourth proportional to 38,781.29, 53,516.97 and 21,787.39 is: 30,065.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,781.29 : 53,516.97 = 21,787.39 : x
  2. Step 2: Convert to fraction form
    38,781.29/53,516.97 = 21,787.39/x
  3. Step 3: Cross multiply
    38,781.29x = 53,516.97 × 21,787.39
  4. Step 4: Simplify right side
    38,781.29x = 1,165,994,862.87
  5. Step 5: Solve for x
    x = 1,165,994,862.87/38,781.29
  6. Step 6: Final answer
    x = 30,065.91

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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.