Home / 13,665.20-20,496.72-4,899.20

Finding the Fourth Proportional to 13,665.20, 20,496.72 and 4,899.20

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Solution

The fourth proportional to 13,665.20, 20,496.72 and 4,899.20 is: 7,348.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.20 : 20,496.72 = 4,899.20 : x
  2. Step 2: Convert to fraction form
    13,665.20/20,496.72 = 4,899.20/x
  3. Step 3: Cross multiply
    13,665.20x = 20,496.72 × 4,899.20
  4. Step 4: Simplify right side
    13,665.20x = 100,417,530.62
  5. Step 5: Solve for x
    x = 100,417,530.62/13,665.20
  6. Step 6: Final answer
    x = 7,348.41

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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.