Home / 18,301.31-27,430.77-8,419.85

Finding the Fourth Proportional to 18,301.31, 27,430.77 and 8,419.85

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Solution

The fourth proportional to 18,301.31, 27,430.77 and 8,419.85 is: 12,620.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,301.31 : 27,430.77 = 8,419.85 : x
  2. Step 2: Convert to fraction form
    18,301.31/27,430.77 = 8,419.85/x
  3. Step 3: Cross multiply
    18,301.31x = 27,430.77 × 8,419.85
  4. Step 4: Simplify right side
    18,301.31x = 230,962,968.78
  5. Step 5: Solve for x
    x = 230,962,968.78/18,301.31
  6. Step 6: Final answer
    x = 12,620.02

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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.