Home / 21,154.92-29,196.90-12,200.68

Finding the Fourth Proportional to 21,154.92, 29,196.90 and 12,200.68

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Solution

The fourth proportional to 21,154.92, 29,196.90 and 12,200.68 is: 16,838.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.92 : 29,196.90 = 12,200.68 : x
  2. Step 2: Convert to fraction form
    21,154.92/29,196.90 = 12,200.68/x
  3. Step 3: Cross multiply
    21,154.92x = 29,196.90 × 12,200.68
  4. Step 4: Simplify right side
    21,154.92x = 356,222,033.89
  5. Step 5: Solve for x
    x = 356,222,033.89/21,154.92
  6. Step 6: Final answer
    x = 16,838.73

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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.