Home / 13,686.68-20,530.04-3,298.44

Finding the Fourth Proportional to 13,686.68, 20,530.04 and 3,298.44

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Solution

The fourth proportional to 13,686.68, 20,530.04 and 3,298.44 is: 4,947.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.68 : 20,530.04 = 3,298.44 : x
  2. Step 2: Convert to fraction form
    13,686.68/20,530.04 = 3,298.44/x
  3. Step 3: Cross multiply
    13,686.68x = 20,530.04 × 3,298.44
  4. Step 4: Simplify right side
    13,686.68x = 67,717,105.14
  5. Step 5: Solve for x
    x = 67,717,105.14/13,686.68
  6. Step 6: Final answer
    x = 4,947.66

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Similar ratio
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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.