Home / 20,352.52-28,087.34-11,399.80

Finding the Fourth Proportional to 20,352.52, 28,087.34 and 11,399.80

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Solution

The fourth proportional to 20,352.52, 28,087.34 and 11,399.80 is: 15,732.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.52 : 28,087.34 = 11,399.80 : x
  2. Step 2: Convert to fraction form
    20,352.52/28,087.34 = 11,399.80/x
  3. Step 3: Cross multiply
    20,352.52x = 28,087.34 × 11,399.80
  4. Step 4: Simplify right side
    20,352.52x = 320,190,058.53
  5. Step 5: Solve for x
    x = 320,190,058.53/20,352.52
  6. Step 6: Final answer
    x = 15,732.21

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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.