Home / 21,396.89-29,524.11-12,444.77

Finding the Fourth Proportional to 21,396.89, 29,524.11 and 12,444.77

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Solution

The fourth proportional to 21,396.89, 29,524.11 and 12,444.77 is: 17,171.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396.89 : 29,524.11 = 12,444.77 : x
  2. Step 2: Convert to fraction form
    21,396.89/29,524.11 = 12,444.77/x
  3. Step 3: Cross multiply
    21,396.89x = 29,524.11 × 12,444.77
  4. Step 4: Simplify right side
    21,396.89x = 367,420,610.78
  5. Step 5: Solve for x
    x = 367,420,610.78/21,396.89
  6. Step 6: Final answer
    x = 17,171.69

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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.