Home / 21,246.41-29,320.10-11,816.80

Finding the Fourth Proportional to 21,246.41, 29,320.10 and 11,816.80

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Solution

The fourth proportional to 21,246.41, 29,320.10 and 11,816.80 is: 16,307.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246.41 : 29,320.10 = 11,816.80 : x
  2. Step 2: Convert to fraction form
    21,246.41/29,320.10 = 11,816.80/x
  3. Step 3: Cross multiply
    21,246.41x = 29,320.10 × 11,816.80
  4. Step 4: Simplify right side
    21,246.41x = 346,469,757.68
  5. Step 5: Solve for x
    x = 346,469,757.68/21,246.41
  6. Step 6: Final answer
    x = 16,307.21

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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.