Home / 21,353.86-29,468.35-11,922.42

Finding the Fourth Proportional to 21,353.86, 29,468.35 and 11,922.42

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Solution

The fourth proportional to 21,353.86, 29,468.35 and 11,922.42 is: 16,452.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.86 : 29,468.35 = 11,922.42 : x
  2. Step 2: Convert to fraction form
    21,353.86/29,468.35 = 11,922.42/x
  3. Step 3: Cross multiply
    21,353.86x = 29,468.35 × 11,922.42
  4. Step 4: Simplify right side
    21,353.86x = 351,334,045.41
  5. Step 5: Solve for x
    x = 351,334,045.41/21,353.86
  6. Step 6: Final answer
    x = 16,452.95

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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.