Home / 21,306.63-29,401.92-12,230.07

Finding the Fourth Proportional to 21,306.63, 29,401.92 and 12,230.07

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Solution

The fourth proportional to 21,306.63, 29,401.92 and 12,230.07 is: 16,876.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.63 : 29,401.92 = 12,230.07 : x
  2. Step 2: Convert to fraction form
    21,306.63/29,401.92 = 12,230.07/x
  3. Step 3: Cross multiply
    21,306.63x = 29,401.92 × 12,230.07
  4. Step 4: Simplify right side
    21,306.63x = 359,587,539.73
  5. Step 5: Solve for x
    x = 359,587,539.73/21,306.63
  6. Step 6: Final answer
    x = 16,876.79

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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.