Home / 21,155.74-29,193.90-12,206.13

Finding the Fourth Proportional to 21,155.74, 29,193.90 and 12,206.13

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Solution

The fourth proportional to 21,155.74, 29,193.90 and 12,206.13 is: 16,843.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.74 : 29,193.90 = 12,206.13 : x
  2. Step 2: Convert to fraction form
    21,155.74/29,193.90 = 12,206.13/x
  3. Step 3: Cross multiply
    21,155.74x = 29,193.90 × 12,206.13
  4. Step 4: Simplify right side
    21,155.74x = 356,344,383.36
  5. Step 5: Solve for x
    x = 356,344,383.36/21,155.74
  6. Step 6: Final answer
    x = 16,843.86

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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.