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Finding the Fourth Proportional to 21,877.62, 32,808.33 and 7,835.46

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Solution

The fourth proportional to 21,877.62, 32,808.33 and 7,835.46 is: 11,750.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,877.62 : 32,808.33 = 7,835.46 : x
  2. Step 2: Convert to fraction form
    21,877.62/32,808.33 = 7,835.46/x
  3. Step 3: Cross multiply
    21,877.62x = 32,808.33 × 7,835.46
  4. Step 4: Simplify right side
    21,877.62x = 257,068,357.38
  5. Step 5: Solve for x
    x = 257,068,357.38/21,877.62
  6. Step 6: Final answer
    x = 11,750.29

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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.