Home / 21,247.10-31,872.73-7,741.94

Finding the Fourth Proportional to 21,247.10, 31,872.73 and 7,741.94

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Solution

The fourth proportional to 21,247.10, 31,872.73 and 7,741.94 is: 11,613.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.10 : 31,872.73 = 7,741.94 : x
  2. Step 2: Convert to fraction form
    21,247.10/31,872.73 = 7,741.94/x
  3. Step 3: Cross multiply
    21,247.10x = 31,872.73 × 7,741.94
  4. Step 4: Simplify right side
    21,247.10x = 246,756,763.30
  5. Step 5: Solve for x
    x = 246,756,763.30/21,247.10
  6. Step 6: Final answer
    x = 11,613.67

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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.