Home / 20,388.80-30,579.84-19,060.48

Finding the Fourth Proportional to 20,388.80, 30,579.84 and 19,060.48

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Solution

The fourth proportional to 20,388.80, 30,579.84 and 19,060.48 is: 28,587.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.80 : 30,579.84 = 19,060.48 : x
  2. Step 2: Convert to fraction form
    20,388.80/30,579.84 = 19,060.48/x
  3. Step 3: Cross multiply
    20,388.80x = 30,579.84 × 19,060.48
  4. Step 4: Simplify right side
    20,388.80x = 582,866,428.72
  5. Step 5: Solve for x
    x = 582,866,428.72/20,388.80
  6. Step 6: Final answer
    x = 28,587.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.