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Finding the Fourth Proportional to 13,950.16, 20,919.96 and 5,627.32

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Solution

The fourth proportional to 13,950.16, 20,919.96 and 5,627.32 is: 8,438.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,950.16 : 20,919.96 = 5,627.32 : x
  2. Step 2: Convert to fraction form
    13,950.16/20,919.96 = 5,627.32/x
  3. Step 3: Cross multiply
    13,950.16x = 20,919.96 × 5,627.32
  4. Step 4: Simplify right side
    13,950.16x = 117,723,309.31
  5. Step 5: Solve for x
    x = 117,723,309.31/13,950.16
  6. Step 6: Final answer
    x = 8,438.85

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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.