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Finding the Fourth Proportional to 28,871, 43,181.40 and 16,996.48

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Solution

The fourth proportional to 28,871, 43,181.40 and 16,996.48 is: 25,421.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,871 : 43,181.40 = 16,996.48 : x
  2. Step 2: Convert to fraction form
    28,871/43,181.40 = 16,996.48/x
  3. Step 3: Cross multiply
    28,871x = 43,181.40 × 16,996.48
  4. Step 4: Simplify right side
    28,871x = 733,931,801.47
  5. Step 5: Solve for x
    x = 733,931,801.47/28,871
  6. Step 6: Final answer
    x = 25,421.07

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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.