Home / 13,486.87-20,176.10-11,657.62

Finding the Fourth Proportional to 13,486.87, 20,176.10 and 11,657.62

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Solution

The fourth proportional to 13,486.87, 20,176.10 and 11,657.62 is: 17,439.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.87 : 20,176.10 = 11,657.62 : x
  2. Step 2: Convert to fraction form
    13,486.87/20,176.10 = 11,657.62/x
  3. Step 3: Cross multiply
    13,486.87x = 20,176.10 × 11,657.62
  4. Step 4: Simplify right side
    13,486.87x = 235,205,198.15
  5. Step 5: Solve for x
    x = 235,205,198.15/13,486.87
  6. Step 6: Final answer
    x = 17,439.57

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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.