Home / 21,381.42-29,505.85-11,950.86

Finding the Fourth Proportional to 21,381.42, 29,505.85 and 11,950.86

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Solution

The fourth proportional to 21,381.42, 29,505.85 and 11,950.86 is: 16,491.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381.42 : 29,505.85 = 11,950.86 : x
  2. Step 2: Convert to fraction form
    21,381.42/29,505.85 = 11,950.86/x
  3. Step 3: Cross multiply
    21,381.42x = 29,505.85 × 11,950.86
  4. Step 4: Simplify right side
    21,381.42x = 352,620,282.53
  5. Step 5: Solve for x
    x = 352,620,282.53/21,381.42
  6. Step 6: Final answer
    x = 16,491.90

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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.