Home / 11,321.60-16,972.72-4,297.68

Finding the Fourth Proportional to 11,321.60, 16,972.72 and 4,297.68

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Solution

The fourth proportional to 11,321.60, 16,972.72 and 4,297.68 is: 6,442.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.60 : 16,972.72 = 4,297.68 : x
  2. Step 2: Convert to fraction form
    11,321.60/16,972.72 = 4,297.68/x
  3. Step 3: Cross multiply
    11,321.60x = 16,972.72 × 4,297.68
  4. Step 4: Simplify right side
    11,321.60x = 72,943,319.29
  5. Step 5: Solve for x
    x = 72,943,319.29/11,321.60
  6. Step 6: Final answer
    x = 6,442.85

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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.