Home / 21,792.45-30,071.10-12,231.04

Finding the Fourth Proportional to 21,792.45, 30,071.10 and 12,231.04

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Solution

The fourth proportional to 21,792.45, 30,071.10 and 12,231.04 is: 16,877.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,792.45 : 30,071.10 = 12,231.04 : x
  2. Step 2: Convert to fraction form
    21,792.45/30,071.10 = 12,231.04/x
  3. Step 3: Cross multiply
    21,792.45x = 30,071.10 × 12,231.04
  4. Step 4: Simplify right side
    21,792.45x = 367,800,765.79
  5. Step 5: Solve for x
    x = 367,800,765.79/21,792.45
  6. Step 6: Final answer
    x = 16,877.44

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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.