Home / 13,697.15-20,545.72-3,308.90

Finding the Fourth Proportional to 13,697.15, 20,545.72 and 3,308.90

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Solution

The fourth proportional to 13,697.15, 20,545.72 and 3,308.90 is: 4,963.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,697.15 : 20,545.72 = 3,308.90 : x
  2. Step 2: Convert to fraction form
    13,697.15/20,545.72 = 3,308.90/x
  3. Step 3: Cross multiply
    13,697.15x = 20,545.72 × 3,308.90
  4. Step 4: Simplify right side
    13,697.15x = 67,983,621.91
  5. Step 5: Solve for x
    x = 67,983,621.91/13,697.15
  6. Step 6: Final answer
    x = 4,963.34

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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.