Home / 13,690.87-20,538.51-5,366.37

Finding the Fourth Proportional to 13,690.87, 20,538.51 and 5,366.37

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Solution

The fourth proportional to 13,690.87, 20,538.51 and 5,366.37 is: 8,050.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.87 : 20,538.51 = 5,366.37 : x
  2. Step 2: Convert to fraction form
    13,690.87/20,538.51 = 5,366.37/x
  3. Step 3: Cross multiply
    13,690.87x = 20,538.51 × 5,366.37
  4. Step 4: Simplify right side
    13,690.87x = 110,217,243.91
  5. Step 5: Solve for x
    x = 110,217,243.91/13,690.87
  6. Step 6: Final answer
    x = 8,050.42

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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.