Home / 20,539.25-28,344.18-11,107.82

Finding the Fourth Proportional to 20,539.25, 28,344.18 and 11,107.82

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Solution

The fourth proportional to 20,539.25, 28,344.18 and 11,107.82 is: 15,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.25 : 28,344.18 = 11,107.82 : x
  2. Step 2: Convert to fraction form
    20,539.25/28,344.18 = 11,107.82/x
  3. Step 3: Cross multiply
    20,539.25x = 28,344.18 × 11,107.82
  4. Step 4: Simplify right side
    20,539.25x = 314,842,049.49
  5. Step 5: Solve for x
    x = 314,842,049.49/20,539.25
  6. Step 6: Final answer
    x = 15,328.80

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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.