Home / 21,158.49-29,198.21-11,726.85

Finding the Fourth Proportional to 21,158.49, 29,198.21 and 11,726.85

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Solution

The fourth proportional to 21,158.49, 29,198.21 and 11,726.85 is: 16,182.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.49 : 29,198.21 = 11,726.85 : x
  2. Step 2: Convert to fraction form
    21,158.49/29,198.21 = 11,726.85/x
  3. Step 3: Cross multiply
    21,158.49x = 29,198.21 × 11,726.85
  4. Step 4: Simplify right side
    21,158.49x = 342,403,028.94
  5. Step 5: Solve for x
    x = 342,403,028.94/21,158.49
  6. Step 6: Final answer
    x = 16,182.77

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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.