Home / 13,747.36-20,620.08-4,387.20

Finding the Fourth Proportional to 13,747.36, 20,620.08 and 4,387.20

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Solution

The fourth proportional to 13,747.36, 20,620.08 and 4,387.20 is: 6,580.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.36 : 20,620.08 = 4,387.20 : x
  2. Step 2: Convert to fraction form
    13,747.36/20,620.08 = 4,387.20/x
  3. Step 3: Cross multiply
    13,747.36x = 20,620.08 × 4,387.20
  4. Step 4: Simplify right side
    13,747.36x = 90,464,414.98
  5. Step 5: Solve for x
    x = 90,464,414.98/13,747.36
  6. Step 6: Final answer
    x = 6,580.49

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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.