Home / 21,180.16-29,227.80-11,748.56

Finding the Fourth Proportional to 21,180.16, 29,227.80 and 11,748.56

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Solution

The fourth proportional to 21,180.16, 29,227.80 and 11,748.56 is: 16,212.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.16 : 29,227.80 = 11,748.56 : x
  2. Step 2: Convert to fraction form
    21,180.16/29,227.80 = 11,748.56/x
  3. Step 3: Cross multiply
    21,180.16x = 29,227.80 × 11,748.56
  4. Step 4: Simplify right side
    21,180.16x = 343,384,561.97
  5. Step 5: Solve for x
    x = 343,384,561.97/21,180.16
  6. Step 6: Final answer
    x = 16,212.56

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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.