Home / 13,697.12-20,545.68-3,308.88

Finding the Fourth Proportional to 13,697.12, 20,545.68 and 3,308.88

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Solution

The fourth proportional to 13,697.12, 20,545.68 and 3,308.88 is: 4,963.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,697.12 : 20,545.68 = 3,308.88 : x
  2. Step 2: Convert to fraction form
    13,697.12/20,545.68 = 3,308.88/x
  3. Step 3: Cross multiply
    13,697.12x = 20,545.68 × 3,308.88
  4. Step 4: Simplify right side
    13,697.12x = 67,983,189.64
  5. Step 5: Solve for x
    x = 67,983,189.64/13,697.12
  6. Step 6: Final answer
    x = 4,963.32

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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.