Home / 11,280.08-16,923-7,149.44

Finding the Fourth Proportional to 11,280.08, 16,923 and 7,149.44

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Solution

The fourth proportional to 11,280.08, 16,923 and 7,149.44 is: 10,725.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.08 : 16,923 = 7,149.44 : x
  2. Step 2: Convert to fraction form
    11,280.08/16,923 = 7,149.44/x
  3. Step 3: Cross multiply
    11,280.08x = 16,923 × 7,149.44
  4. Step 4: Simplify right side
    11,280.08x = 120,989,973.12
  5. Step 5: Solve for x
    x = 120,989,973.12/11,280.08
  6. Step 6: Final answer
    x = 10,725.99

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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.