Home / 19,181.18-28,760.42-7,480.74

Finding the Fourth Proportional to 19,181.18, 28,760.42 and 7,480.74

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Solution

The fourth proportional to 19,181.18, 28,760.42 and 7,480.74 is: 11,216.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,181.18 : 28,760.42 = 7,480.74 : x
  2. Step 2: Convert to fraction form
    19,181.18/28,760.42 = 7,480.74/x
  3. Step 3: Cross multiply
    19,181.18x = 28,760.42 × 7,480.74
  4. Step 4: Simplify right side
    19,181.18x = 215,149,224.31
  5. Step 5: Solve for x
    x = 215,149,224.31/19,181.18
  6. Step 6: Final answer
    x = 11,216.68

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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.