Home / 28,001.44-38,635.92-21,285.28

Finding the Fourth Proportional to 28,001.44, 38,635.92 and 21,285.28

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Solution

The fourth proportional to 28,001.44, 38,635.92 and 21,285.28 is: 29,369.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.44 : 38,635.92 = 21,285.28 : x
  2. Step 2: Convert to fraction form
    28,001.44/38,635.92 = 21,285.28/x
  3. Step 3: Cross multiply
    28,001.44x = 38,635.92 × 21,285.28
  4. Step 4: Simplify right side
    28,001.44x = 822,376,375.26
  5. Step 5: Solve for x
    x = 822,376,375.26/28,001.44
  6. Step 6: Final answer
    x = 29,369.07

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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.