Home / 19,090.78-28,638.14-6,610.78

Finding the Fourth Proportional to 19,090.78, 28,638.14 and 6,610.78

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Solution

The fourth proportional to 19,090.78, 28,638.14 and 6,610.78 is: 9,916.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,090.78 : 28,638.14 = 6,610.78 : x
  2. Step 2: Convert to fraction form
    19,090.78/28,638.14 = 6,610.78/x
  3. Step 3: Cross multiply
    19,090.78x = 28,638.14 × 6,610.78
  4. Step 4: Simplify right side
    19,090.78x = 189,320,443.15
  5. Step 5: Solve for x
    x = 189,320,443.15/19,090.78
  6. Step 6: Final answer
    x = 9,916.85

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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.