Home / 21,652.62-29,880.39-12,221.58

Finding the Fourth Proportional to 21,652.62, 29,880.39 and 12,221.58

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Solution

The fourth proportional to 21,652.62, 29,880.39 and 12,221.58 is: 16,865.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,652.62 : 29,880.39 = 12,221.58 : x
  2. Step 2: Convert to fraction form
    21,652.62/29,880.39 = 12,221.58/x
  3. Step 3: Cross multiply
    21,652.62x = 29,880.39 × 12,221.58
  4. Step 4: Simplify right side
    21,652.62x = 365,185,576.82
  5. Step 5: Solve for x
    x = 365,185,576.82/21,652.62
  6. Step 6: Final answer
    x = 16,865.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.