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Finding the Fourth Proportional to 28,010.61, 38,646.33 and 16,671

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Solution

The fourth proportional to 28,010.61, 38,646.33 and 16,671 is: 23,001.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.61 : 38,646.33 = 16,671 : x
  2. Step 2: Convert to fraction form
    28,010.61/38,646.33 = 16,671/x
  3. Step 3: Cross multiply
    28,010.61x = 38,646.33 × 16,671
  4. Step 4: Simplify right side
    28,010.61x = 644,272,967.43
  5. Step 5: Solve for x
    x = 644,272,967.43/28,010.61
  6. Step 6: Final answer
    x = 23,001.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.