Home / 21,253.26-29,336.82-12,869.76

Finding the Fourth Proportional to 21,253.26, 29,336.82 and 12,869.76

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Solution

The fourth proportional to 21,253.26, 29,336.82 and 12,869.76 is: 17,764.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.26 : 29,336.82 = 12,869.76 : x
  2. Step 2: Convert to fraction form
    21,253.26/29,336.82 = 12,869.76/x
  3. Step 3: Cross multiply
    21,253.26x = 29,336.82 × 12,869.76
  4. Step 4: Simplify right side
    21,253.26x = 377,557,832.56
  5. Step 5: Solve for x
    x = 377,557,832.56/21,253.26
  6. Step 6: Final answer
    x = 17,764.70

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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.