Home / 10,078.82-15,121.26-4,071.80

Finding the Fourth Proportional to 10,078.82, 15,121.26 and 4,071.80

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Solution

The fourth proportional to 10,078.82, 15,121.26 and 4,071.80 is: 6,108.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,078.82 : 15,121.26 = 4,071.80 : x
  2. Step 2: Convert to fraction form
    10,078.82/15,121.26 = 4,071.80/x
  3. Step 3: Cross multiply
    10,078.82x = 15,121.26 × 4,071.80
  4. Step 4: Simplify right side
    10,078.82x = 61,570,746.47
  5. Step 5: Solve for x
    x = 61,570,746.47/10,078.82
  6. Step 6: Final answer
    x = 6,108.92

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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.