Home / 10,380.07-15,582.44-8,190.37

Finding the Fourth Proportional to 10,380.07, 15,582.44 and 8,190.37

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Solution

The fourth proportional to 10,380.07, 15,582.44 and 8,190.37 is: 12,295.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.07 : 15,582.44 = 8,190.37 : x
  2. Step 2: Convert to fraction form
    10,380.07/15,582.44 = 8,190.37/x
  3. Step 3: Cross multiply
    10,380.07x = 15,582.44 × 8,190.37
  4. Step 4: Simplify right side
    10,380.07x = 127,625,949.10
  5. Step 5: Solve for x
    x = 127,625,949.10/10,380.07
  6. Step 6: Final answer
    x = 12,295.29

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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.