Home / 21,099.99-29,116.82-11,537.98

Finding the Fourth Proportional to 21,099.99, 29,116.82 and 11,537.98

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Solution

The fourth proportional to 21,099.99, 29,116.82 and 11,537.98 is: 15,921.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.99 : 29,116.82 = 11,537.98 : x
  2. Step 2: Convert to fraction form
    21,099.99/29,116.82 = 11,537.98/x
  3. Step 3: Cross multiply
    21,099.99x = 29,116.82 × 11,537.98
  4. Step 4: Simplify right side
    21,099.99x = 335,949,177.98
  5. Step 5: Solve for x
    x = 335,949,177.98/21,099.99
  6. Step 6: Final answer
    x = 15,921.77

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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.