Home / 13,747.07-20,618.78-3,887.12

Finding the Fourth Proportional to 13,747.07, 20,618.78 and 3,887.12

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Solution

The fourth proportional to 13,747.07, 20,618.78 and 3,887.12 is: 5,830.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.07 : 20,618.78 = 3,887.12 : x
  2. Step 2: Convert to fraction form
    13,747.07/20,618.78 = 3,887.12/x
  3. Step 3: Cross multiply
    13,747.07x = 20,618.78 × 3,887.12
  4. Step 4: Simplify right side
    13,747.07x = 80,147,549.58
  5. Step 5: Solve for x
    x = 80,147,549.58/13,747.07
  6. Step 6: Final answer
    x = 5,830.16

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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.