Home / 13,481.78-20,223.63-4,718.90

Finding the Fourth Proportional to 13,481.78, 20,223.63 and 4,718.90

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Solution

The fourth proportional to 13,481.78, 20,223.63 and 4,718.90 is: 7,078.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.78 : 20,223.63 = 4,718.90 : x
  2. Step 2: Convert to fraction form
    13,481.78/20,223.63 = 4,718.90/x
  3. Step 3: Cross multiply
    13,481.78x = 20,223.63 × 4,718.90
  4. Step 4: Simplify right side
    13,481.78x = 95,433,287.61
  5. Step 5: Solve for x
    x = 95,433,287.61/13,481.78
  6. Step 6: Final answer
    x = 7,078.69

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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.