Home / 21,525.84-29,705.31-11,965.68

Finding the Fourth Proportional to 21,525.84, 29,705.31 and 11,965.68

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Solution

The fourth proportional to 21,525.84, 29,705.31 and 11,965.68 is: 16,512.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,525.84 : 29,705.31 = 11,965.68 : x
  2. Step 2: Convert to fraction form
    21,525.84/29,705.31 = 11,965.68/x
  3. Step 3: Cross multiply
    21,525.84x = 29,705.31 × 11,965.68
  4. Step 4: Simplify right side
    21,525.84x = 355,444,233.76
  5. Step 5: Solve for x
    x = 355,444,233.76/21,525.84
  6. Step 6: Final answer
    x = 16,512.44

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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.