Home / 15,385.20-21,093.09-15,104.94

Finding the Fourth Proportional to 15,385.20, 21,093.09 and 15,104.94

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Solution

The fourth proportional to 15,385.20, 21,093.09 and 15,104.94 is: 20,708.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.20 : 21,093.09 = 15,104.94 : x
  2. Step 2: Convert to fraction form
    15,385.20/21,093.09 = 15,104.94/x
  3. Step 3: Cross multiply
    15,385.20x = 21,093.09 × 15,104.94
  4. Step 4: Simplify right side
    15,385.20x = 318,609,858.86
  5. Step 5: Solve for x
    x = 318,609,858.86/15,385.20
  6. Step 6: Final answer
    x = 20,708.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.