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Finding the Fourth Proportional to 13,659.19, 20,486.48 and 3,799.46

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Solution

The fourth proportional to 13,659.19, 20,486.48 and 3,799.46 is: 5,698.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,659.19 : 20,486.48 = 3,799.46 : x
  2. Step 2: Convert to fraction form
    13,659.19/20,486.48 = 3,799.46/x
  3. Step 3: Cross multiply
    13,659.19x = 20,486.48 × 3,799.46
  4. Step 4: Simplify right side
    13,659.19x = 77,837,593.52
  5. Step 5: Solve for x
    x = 77,837,593.52/13,659.19
  6. Step 6: Final answer
    x = 5,698.55

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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.