Home / 21,722.46-29,991.78-16,446.12

Finding the Fourth Proportional to 21,722.46, 29,991.78 and 16,446.12

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Solution

The fourth proportional to 21,722.46, 29,991.78 and 16,446.12 is: 22,706.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,722.46 : 29,991.78 = 16,446.12 : x
  2. Step 2: Convert to fraction form
    21,722.46/29,991.78 = 16,446.12/x
  3. Step 3: Cross multiply
    21,722.46x = 29,991.78 × 16,446.12
  4. Step 4: Simplify right side
    21,722.46x = 493,248,412.89
  5. Step 5: Solve for x
    x = 493,248,412.89/21,722.46
  6. Step 6: Final answer
    x = 22,706.84

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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.