Home / 18,801.12-28,199.44-4,951.20

Finding the Fourth Proportional to 18,801.12, 28,199.44 and 4,951.20

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Solution

The fourth proportional to 18,801.12, 28,199.44 and 4,951.20 is: 7,426.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.12 : 28,199.44 = 4,951.20 : x
  2. Step 2: Convert to fraction form
    18,801.12/28,199.44 = 4,951.20/x
  3. Step 3: Cross multiply
    18,801.12x = 28,199.44 × 4,951.20
  4. Step 4: Simplify right side
    18,801.12x = 139,621,067.33
  5. Step 5: Solve for x
    x = 139,621,067.33/18,801.12
  6. Step 6: Final answer
    x = 7,426.21

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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.