Home / 18,865.36-28,296.41-6,385.11

Finding the Fourth Proportional to 18,865.36, 28,296.41 and 6,385.11

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Solution

The fourth proportional to 18,865.36, 28,296.41 and 6,385.11 is: 9,577.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.36 : 28,296.41 = 6,385.11 : x
  2. Step 2: Convert to fraction form
    18,865.36/28,296.41 = 6,385.11/x
  3. Step 3: Cross multiply
    18,865.36x = 28,296.41 × 6,385.11
  4. Step 4: Simplify right side
    18,865.36x = 180,675,517.05
  5. Step 5: Solve for x
    x = 180,675,517.05/18,865.36
  6. Step 6: Final answer
    x = 9,577.10

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1.5x scale

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.