Home / 13,613.47-20,422.78-4,728.44

Finding the Fourth Proportional to 13,613.47, 20,422.78 and 4,728.44

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Solution

The fourth proportional to 13,613.47, 20,422.78 and 4,728.44 is: 7,093.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.47 : 20,422.78 = 4,728.44 : x
  2. Step 2: Convert to fraction form
    13,613.47/20,422.78 = 4,728.44/x
  3. Step 3: Cross multiply
    13,613.47x = 20,422.78 × 4,728.44
  4. Step 4: Simplify right side
    13,613.47x = 96,567,929.10
  5. Step 5: Solve for x
    x = 96,567,929.10/13,613.47
  6. Step 6: Final answer
    x = 7,093.56

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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.