Home / 21,297.87-29,391.07-11,737.76

Finding the Fourth Proportional to 21,297.87, 29,391.07 and 11,737.76

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Solution

The fourth proportional to 21,297.87, 29,391.07 and 11,737.76 is: 16,198.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.87 : 29,391.07 = 11,737.76 : x
  2. Step 2: Convert to fraction form
    21,297.87/29,391.07 = 11,737.76/x
  3. Step 3: Cross multiply
    21,297.87x = 29,391.07 × 11,737.76
  4. Step 4: Simplify right side
    21,297.87x = 344,985,287.32
  5. Step 5: Solve for x
    x = 344,985,287.32/21,297.87
  6. Step 6: Final answer
    x = 16,198.11

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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.