Home / 21,124.30-29,151.46-11,433.75

Finding the Fourth Proportional to 21,124.30, 29,151.46 and 11,433.75

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Solution

The fourth proportional to 21,124.30, 29,151.46 and 11,433.75 is: 15,778.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.30 : 29,151.46 = 11,433.75 : x
  2. Step 2: Convert to fraction form
    21,124.30/29,151.46 = 11,433.75/x
  3. Step 3: Cross multiply
    21,124.30x = 29,151.46 × 11,433.75
  4. Step 4: Simplify right side
    21,124.30x = 333,310,505.78
  5. Step 5: Solve for x
    x = 333,310,505.78/21,124.30
  6. Step 6: Final answer
    x = 15,778.53

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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.