Home / 15,929.82-23,899.71-12,431.76

Finding the Fourth Proportional to 15,929.82, 23,899.71 and 12,431.76

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Solution

The fourth proportional to 15,929.82, 23,899.71 and 12,431.76 is: 18,651.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,929.82 : 23,899.71 = 12,431.76 : x
  2. Step 2: Convert to fraction form
    15,929.82/23,899.71 = 12,431.76/x
  3. Step 3: Cross multiply
    15,929.82x = 23,899.71 × 12,431.76
  4. Step 4: Simplify right side
    15,929.82x = 297,115,458.79
  5. Step 5: Solve for x
    x = 297,115,458.79/15,929.82
  6. Step 6: Final answer
    x = 18,651.53

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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.