Home / 21,113.98-29,136.83-11,553.82

Finding the Fourth Proportional to 21,113.98, 29,136.83 and 11,553.82

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Solution

The fourth proportional to 21,113.98, 29,136.83 and 11,553.82 is: 15,944.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.98 : 29,136.83 = 11,553.82 : x
  2. Step 2: Convert to fraction form
    21,113.98/29,136.83 = 11,553.82/x
  3. Step 3: Cross multiply
    21,113.98x = 29,136.83 × 11,553.82
  4. Step 4: Simplify right side
    21,113.98x = 336,641,689.19
  5. Step 5: Solve for x
    x = 336,641,689.19/21,113.98
  6. Step 6: Final answer
    x = 15,944.02

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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.