Home / 21,230.88-29,297.81-11,800.05

Finding the Fourth Proportional to 21,230.88, 29,297.81 and 11,800.05

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Solution

The fourth proportional to 21,230.88, 29,297.81 and 11,800.05 is: 16,283.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.88 : 29,297.81 = 11,800.05 : x
  2. Step 2: Convert to fraction form
    21,230.88/29,297.81 = 11,800.05/x
  3. Step 3: Cross multiply
    21,230.88x = 29,297.81 × 11,800.05
  4. Step 4: Simplify right side
    21,230.88x = 345,715,563.89
  5. Step 5: Solve for x
    x = 345,715,563.89/21,230.88
  6. Step 6: Final answer
    x = 16,283.62

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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.