Home / 21,148.50-29,183.76-11,716.32

Finding the Fourth Proportional to 21,148.50, 29,183.76 and 11,716.32

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Solution

The fourth proportional to 21,148.50, 29,183.76 and 11,716.32 is: 16,167.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.50 : 29,183.76 = 11,716.32 : x
  2. Step 2: Convert to fraction form
    21,148.50/29,183.76 = 11,716.32/x
  3. Step 3: Cross multiply
    21,148.50x = 29,183.76 × 11,716.32
  4. Step 4: Simplify right side
    21,148.50x = 341,926,270.96
  5. Step 5: Solve for x
    x = 341,926,270.96/21,148.50
  6. Step 6: Final answer
    x = 16,167.87

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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.