Home / 21,858.06-32,819.89-12,508.63

Finding the Fourth Proportional to 21,858.06, 32,819.89 and 12,508.63

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Solution

The fourth proportional to 21,858.06, 32,819.89 and 12,508.63 is: 18,781.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,858.06 : 32,819.89 = 12,508.63 : x
  2. Step 2: Convert to fraction form
    21,858.06/32,819.89 = 12,508.63/x
  3. Step 3: Cross multiply
    21,858.06x = 32,819.89 × 12,508.63
  4. Step 4: Simplify right side
    21,858.06x = 410,531,829.38
  5. Step 5: Solve for x
    x = 410,531,829.38/21,858.06
  6. Step 6: Final answer
    x = 18,781.72

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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.