Home / 21,097.72-31,650.09-8,624.44

Finding the Fourth Proportional to 21,097.72, 31,650.09 and 8,624.44

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Solution

The fourth proportional to 21,097.72, 31,650.09 and 8,624.44 is: 12,938.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097.72 : 31,650.09 = 8,624.44 : x
  2. Step 2: Convert to fraction form
    21,097.72/31,650.09 = 8,624.44/x
  3. Step 3: Cross multiply
    21,097.72x = 31,650.09 × 8,624.44
  4. Step 4: Simplify right side
    21,097.72x = 272,964,302.20
  5. Step 5: Solve for x
    x = 272,964,302.20/21,097.72
  6. Step 6: Final answer
    x = 12,938.09

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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.