Home / 16,978.11-25,455.87-7,605.29

Finding the Fourth Proportional to 16,978.11, 25,455.87 and 7,605.29

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Solution

The fourth proportional to 16,978.11, 25,455.87 and 7,605.29 is: 11,402.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,978.11 : 25,455.87 = 7,605.29 : x
  2. Step 2: Convert to fraction form
    16,978.11/25,455.87 = 7,605.29/x
  3. Step 3: Cross multiply
    16,978.11x = 25,455.87 × 7,605.29
  4. Step 4: Simplify right side
    16,978.11x = 193,599,337.19
  5. Step 5: Solve for x
    x = 193,599,337.19/16,978.11
  6. Step 6: Final answer
    x = 11,402.88

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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.