Home / 8,731.72-13,100.15-5,036.60

Finding the Fourth Proportional to 8,731.72, 13,100.15 and 5,036.60

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Solution

The fourth proportional to 8,731.72, 13,100.15 and 5,036.60 is: 7,556.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.72 : 13,100.15 = 5,036.60 : x
  2. Step 2: Convert to fraction form
    8,731.72/13,100.15 = 5,036.60/x
  3. Step 3: Cross multiply
    8,731.72x = 13,100.15 × 5,036.60
  4. Step 4: Simplify right side
    8,731.72x = 65,980,215.49
  5. Step 5: Solve for x
    x = 65,980,215.49/8,731.72
  6. Step 6: Final answer
    x = 7,556.38

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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.