Home / 21,180.29-29,229.75-11,748.86

Finding the Fourth Proportional to 21,180.29, 29,229.75 and 11,748.86

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Solution

The fourth proportional to 21,180.29, 29,229.75 and 11,748.86 is: 16,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.29 : 29,229.75 = 11,748.86 : x
  2. Step 2: Convert to fraction form
    21,180.29/29,229.75 = 11,748.86/x
  3. Step 3: Cross multiply
    21,180.29x = 29,229.75 × 11,748.86
  4. Step 4: Simplify right side
    21,180.29x = 343,416,094.44
  5. Step 5: Solve for x
    x = 343,416,094.44/21,180.29
  6. Step 6: Final answer
    x = 16,213.95

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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.