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Finding the Fourth Proportional to 13,970.32, 20,950.24 and 5,647.68

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Solution

The fourth proportional to 13,970.32, 20,950.24 and 5,647.68 is: 8,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,970.32 : 20,950.24 = 5,647.68 : x
  2. Step 2: Convert to fraction form
    13,970.32/20,950.24 = 5,647.68/x
  3. Step 3: Cross multiply
    13,970.32x = 20,950.24 × 5,647.68
  4. Step 4: Simplify right side
    13,970.32x = 118,320,251.44
  5. Step 5: Solve for x
    x = 118,320,251.44/13,970.32
  6. Step 6: Final answer
    x = 8,469.40

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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.