Home / 21,481.84-29,631.30-15,522.26

Finding the Fourth Proportional to 21,481.84, 29,631.30 and 15,522.26

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Solution

The fourth proportional to 21,481.84, 29,631.30 and 15,522.26 is: 21,410.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,481.84 : 29,631.30 = 15,522.26 : x
  2. Step 2: Convert to fraction form
    21,481.84/29,631.30 = 15,522.26/x
  3. Step 3: Cross multiply
    21,481.84x = 29,631.30 × 15,522.26
  4. Step 4: Simplify right side
    21,481.84x = 459,944,742.74
  5. Step 5: Solve for x
    x = 459,944,742.74/21,481.84
  6. Step 6: Final answer
    x = 21,410.86

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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.