Home / 13,541.88-20,313-4,181.78

Finding the Fourth Proportional to 13,541.88, 20,313 and 4,181.78

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Solution

The fourth proportional to 13,541.88, 20,313 and 4,181.78 is: 6,272.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,541.88 : 20,313 = 4,181.78 : x
  2. Step 2: Convert to fraction form
    13,541.88/20,313 = 4,181.78/x
  3. Step 3: Cross multiply
    13,541.88x = 20,313 × 4,181.78
  4. Step 4: Simplify right side
    13,541.88x = 84,944,497.14
  5. Step 5: Solve for x
    x = 84,944,497.14/13,541.88
  6. Step 6: Final answer
    x = 6,272.73

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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.