Home / 20,614.31-28,447.76-11,661.63

Finding the Fourth Proportional to 20,614.31, 28,447.76 and 11,661.63

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Solution

The fourth proportional to 20,614.31, 28,447.76 and 11,661.63 is: 16,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,614.31 : 28,447.76 = 11,661.63 : x
  2. Step 2: Convert to fraction form
    20,614.31/28,447.76 = 11,661.63/x
  3. Step 3: Cross multiply
    20,614.31x = 28,447.76 × 11,661.63
  4. Step 4: Simplify right side
    20,614.31x = 331,747,109.21
  5. Step 5: Solve for x
    x = 331,747,109.21/20,614.31
  6. Step 6: Final answer
    x = 16,093.05

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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.