Home / 21,525.53-29,705.03-11,965.17

Finding the Fourth Proportional to 21,525.53, 29,705.03 and 11,965.17

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Solution

The fourth proportional to 21,525.53, 29,705.03 and 11,965.17 is: 16,511.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,525.53 : 29,705.03 = 11,965.17 : x
  2. Step 2: Convert to fraction form
    21,525.53/29,705.03 = 11,965.17/x
  3. Step 3: Cross multiply
    21,525.53x = 29,705.03 × 11,965.17
  4. Step 4: Simplify right side
    21,525.53x = 355,425,673.98
  5. Step 5: Solve for x
    x = 355,425,673.98/21,525.53
  6. Step 6: Final answer
    x = 16,511.82

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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.