Home / 21,161.74-29,202.18-12,212.12

Finding the Fourth Proportional to 21,161.74, 29,202.18 and 12,212.12

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Solution

The fourth proportional to 21,161.74, 29,202.18 and 12,212.12 is: 16,852.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.74 : 29,202.18 = 12,212.12 : x
  2. Step 2: Convert to fraction form
    21,161.74/29,202.18 = 12,212.12/x
  3. Step 3: Cross multiply
    21,161.74x = 29,202.18 × 12,212.12
  4. Step 4: Simplify right side
    21,161.74x = 356,620,526.42
  5. Step 5: Solve for x
    x = 356,620,526.42/21,161.74
  6. Step 6: Final answer
    x = 16,852.14

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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.