Home / 20,561.12-30,851.52-19,694.48

Finding the Fourth Proportional to 20,561.12, 30,851.52 and 19,694.48

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Solution

The fourth proportional to 20,561.12, 30,851.52 and 19,694.48 is: 29,551.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.12 : 30,851.52 = 19,694.48 : x
  2. Step 2: Convert to fraction form
    20,561.12/30,851.52 = 19,694.48/x
  3. Step 3: Cross multiply
    20,561.12x = 30,851.52 × 19,694.48
  4. Step 4: Simplify right side
    20,561.12x = 607,604,643.61
  5. Step 5: Solve for x
    x = 607,604,643.61/20,561.12
  6. Step 6: Final answer
    x = 29,551.15

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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.