Home / 20,591.24-28,416.48-11,638.56

Finding the Fourth Proportional to 20,591.24, 28,416.48 and 11,638.56

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Solution

The fourth proportional to 20,591.24, 28,416.48 and 11,638.56 is: 16,061.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.24 : 28,416.48 = 11,638.56 : x
  2. Step 2: Convert to fraction form
    20,591.24/28,416.48 = 11,638.56/x
  3. Step 3: Cross multiply
    20,591.24x = 28,416.48 × 11,638.56
  4. Step 4: Simplify right side
    20,591.24x = 330,726,907.47
  5. Step 5: Solve for x
    x = 330,726,907.47/20,591.24
  6. Step 6: Final answer
    x = 16,061.53

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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.