Home / 27,139.98-40,715.82-8,419.62

Finding the Fourth Proportional to 27,139.98, 40,715.82 and 8,419.62

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Solution

The fourth proportional to 27,139.98, 40,715.82 and 8,419.62 is: 12,631.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,139.98 : 40,715.82 = 8,419.62 : x
  2. Step 2: Convert to fraction form
    27,139.98/40,715.82 = 8,419.62/x
  3. Step 3: Cross multiply
    27,139.98x = 40,715.82 × 8,419.62
  4. Step 4: Simplify right side
    27,139.98x = 342,811,732.39
  5. Step 5: Solve for x
    x = 342,811,732.39/27,139.98
  6. Step 6: Final answer
    x = 12,631.24

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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.