Home / 21,423.96-29,565.06-11,992.56

Finding the Fourth Proportional to 21,423.96, 29,565.06 and 11,992.56

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Solution

The fourth proportional to 21,423.96, 29,565.06 and 11,992.56 is: 16,549.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.96 : 29,565.06 = 11,992.56 : x
  2. Step 2: Convert to fraction form
    21,423.96/29,565.06 = 11,992.56/x
  3. Step 3: Cross multiply
    21,423.96x = 29,565.06 × 11,992.56
  4. Step 4: Simplify right side
    21,423.96x = 354,560,755.95
  5. Step 5: Solve for x
    x = 354,560,755.95/21,423.96
  6. Step 6: Final answer
    x = 16,549.73

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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.