Home / 12,388.64-18,575.42-4,883.20

Finding the Fourth Proportional to 12,388.64, 18,575.42 and 4,883.20

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Solution

The fourth proportional to 12,388.64, 18,575.42 and 4,883.20 is: 7,321.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.64 : 18,575.42 = 4,883.20 : x
  2. Step 2: Convert to fraction form
    12,388.64/18,575.42 = 4,883.20/x
  3. Step 3: Cross multiply
    12,388.64x = 18,575.42 × 4,883.20
  4. Step 4: Simplify right side
    12,388.64x = 90,707,490.94
  5. Step 5: Solve for x
    x = 90,707,490.94/12,388.64
  6. Step 6: Final answer
    x = 7,321.83

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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.