Home / 22,380.87-30,884.99-12,309.32

Finding the Fourth Proportional to 22,380.87, 30,884.99 and 12,309.32

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Solution

The fourth proportional to 22,380.87, 30,884.99 and 12,309.32 is: 16,986.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,380.87 : 30,884.99 = 12,309.32 : x
  2. Step 2: Convert to fraction form
    22,380.87/30,884.99 = 12,309.32/x
  3. Step 3: Cross multiply
    22,380.87x = 30,884.99 × 12,309.32
  4. Step 4: Simplify right side
    22,380.87x = 380,173,009.14
  5. Step 5: Solve for x
    x = 380,173,009.14/22,380.87
  6. Step 6: Final answer
    x = 16,986.52

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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.