Home / 11,280.42-16,902.14-7,987.60

Finding the Fourth Proportional to 11,280.42, 16,902.14 and 7,987.60

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Solution

The fourth proportional to 11,280.42, 16,902.14 and 7,987.60 is: 11,968.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.42 : 16,902.14 = 7,987.60 : x
  2. Step 2: Convert to fraction form
    11,280.42/16,902.14 = 7,987.60/x
  3. Step 3: Cross multiply
    11,280.42x = 16,902.14 × 7,987.60
  4. Step 4: Simplify right side
    11,280.42x = 135,007,514.65
  5. Step 5: Solve for x
    x = 135,007,514.65/11,280.42
  6. Step 6: Final answer
    x = 11,968.31

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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.