Home / 21,001.84-28,982.70-11,441.92

Finding the Fourth Proportional to 21,001.84, 28,982.70 and 11,441.92

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Solution

The fourth proportional to 21,001.84, 28,982.70 and 11,441.92 is: 15,789.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.84 : 28,982.70 = 11,441.92 : x
  2. Step 2: Convert to fraction form
    21,001.84/28,982.70 = 11,441.92/x
  3. Step 3: Cross multiply
    21,001.84x = 28,982.70 × 11,441.92
  4. Step 4: Simplify right side
    21,001.84x = 331,617,734.78
  5. Step 5: Solve for x
    x = 331,617,734.78/21,001.84
  6. Step 6: Final answer
    x = 15,789.94

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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.