Home / 21,224.30-31,808.76-8,730.04

Finding the Fourth Proportional to 21,224.30, 31,808.76 and 8,730.04

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Solution

The fourth proportional to 21,224.30, 31,808.76 and 8,730.04 is: 13,083.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.30 : 31,808.76 = 8,730.04 : x
  2. Step 2: Convert to fraction form
    21,224.30/31,808.76 = 8,730.04/x
  3. Step 3: Cross multiply
    21,224.30x = 31,808.76 × 8,730.04
  4. Step 4: Simplify right side
    21,224.30x = 277,691,747.15
  5. Step 5: Solve for x
    x = 277,691,747.15/21,224.30
  6. Step 6: Final answer
    x = 13,083.67

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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.