Home / 10,400.22-15,601.86-5,135.40

Finding the Fourth Proportional to 10,400.22, 15,601.86 and 5,135.40

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Solution

The fourth proportional to 10,400.22, 15,601.86 and 5,135.40 is: 7,703.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,400.22 : 15,601.86 = 5,135.40 : x
  2. Step 2: Convert to fraction form
    10,400.22/15,601.86 = 5,135.40/x
  3. Step 3: Cross multiply
    10,400.22x = 15,601.86 × 5,135.40
  4. Step 4: Simplify right side
    10,400.22x = 80,121,791.84
  5. Step 5: Solve for x
    x = 80,121,791.84/10,400.22
  6. Step 6: Final answer
    x = 7,703.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.