Home / 21,381.53-29,505.87-11,950.07

Finding the Fourth Proportional to 21,381.53, 29,505.87 and 11,950.07

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Solution

The fourth proportional to 21,381.53, 29,505.87 and 11,950.07 is: 16,490.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381.53 : 29,505.87 = 11,950.07 : x
  2. Step 2: Convert to fraction form
    21,381.53/29,505.87 = 11,950.07/x
  3. Step 3: Cross multiply
    21,381.53x = 29,505.87 × 11,950.07
  4. Step 4: Simplify right side
    21,381.53x = 352,597,064.38
  5. Step 5: Solve for x
    x = 352,597,064.38/21,381.53
  6. Step 6: Final answer
    x = 16,490.74

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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.