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Finding the Fourth Proportional to 21,876.82, 32,818.45 and 7,080.82

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Solution

The fourth proportional to 21,876.82, 32,818.45 and 7,080.82 is: 10,622.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,876.82 : 32,818.45 = 7,080.82 : x
  2. Step 2: Convert to fraction form
    21,876.82/32,818.45 = 7,080.82/x
  3. Step 3: Cross multiply
    21,876.82x = 32,818.45 × 7,080.82
  4. Step 4: Simplify right side
    21,876.82x = 232,381,537.13
  5. Step 5: Solve for x
    x = 232,381,537.13/21,876.82
  6. Step 6: Final answer
    x = 10,622.27

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1.5x scale

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.