Home / 18,920.16-28,380.24-6,441.48

Finding the Fourth Proportional to 18,920.16, 28,380.24 and 6,441.48

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Solution

The fourth proportional to 18,920.16, 28,380.24 and 6,441.48 is: 9,662.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.16 : 28,380.24 = 6,441.48 : x
  2. Step 2: Convert to fraction form
    18,920.16/28,380.24 = 6,441.48/x
  3. Step 3: Cross multiply
    18,920.16x = 28,380.24 × 6,441.48
  4. Step 4: Simplify right side
    18,920.16x = 182,810,748.36
  5. Step 5: Solve for x
    x = 182,810,748.36/18,920.16
  6. Step 6: Final answer
    x = 9,662.22

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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.