Home / 38,868.84-53,638.38-21,641.04

Finding the Fourth Proportional to 38,868.84, 53,638.38 and 21,641.04

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Solution

The fourth proportional to 38,868.84, 53,638.38 and 21,641.04 is: 29,864.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,868.84 : 53,638.38 = 21,641.04 : x
  2. Step 2: Convert to fraction form
    38,868.84/53,638.38 = 21,641.04/x
  3. Step 3: Cross multiply
    38,868.84x = 53,638.38 × 21,641.04
  4. Step 4: Simplify right side
    38,868.84x = 1,160,790,327.12
  5. Step 5: Solve for x
    x = 1,160,790,327.12/38,868.84
  6. Step 6: Final answer
    x = 29,864.29

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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.