Home / 21,209.10-31,824.54-9,519.96

Finding the Fourth Proportional to 21,209.10, 31,824.54 and 9,519.96

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Solution

The fourth proportional to 21,209.10, 31,824.54 and 9,519.96 is: 14,284.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.10 : 31,824.54 = 9,519.96 : x
  2. Step 2: Convert to fraction form
    21,209.10/31,824.54 = 9,519.96/x
  3. Step 3: Cross multiply
    21,209.10x = 31,824.54 × 9,519.96
  4. Step 4: Simplify right side
    21,209.10x = 302,968,347.82
  5. Step 5: Solve for x
    x = 302,968,347.82/21,209.10
  6. Step 6: Final answer
    x = 14,284.83

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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.