Home / 21,113.32-31,669.34-8,801

Finding the Fourth Proportional to 21,113.32, 31,669.34 and 8,801

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Solution

The fourth proportional to 21,113.32, 31,669.34 and 8,801 is: 13,201.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.32 : 31,669.34 = 8,801 : x
  2. Step 2: Convert to fraction form
    21,113.32/31,669.34 = 8,801/x
  3. Step 3: Cross multiply
    21,113.32x = 31,669.34 × 8,801
  4. Step 4: Simplify right side
    21,113.32x = 278,721,861.34
  5. Step 5: Solve for x
    x = 278,721,861.34/21,113.32
  6. Step 6: Final answer
    x = 13,201.23

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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.