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Finding the Fourth Proportional to 28,132.89, 38,822.85 and 16,804.89

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Solution

The fourth proportional to 28,132.89, 38,822.85 and 16,804.89 is: 23,190.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.89 : 38,822.85 = 16,804.89 : x
  2. Step 2: Convert to fraction form
    28,132.89/38,822.85 = 16,804.89/x
  3. Step 3: Cross multiply
    28,132.89x = 38,822.85 × 16,804.89
  4. Step 4: Simplify right side
    28,132.89x = 652,413,723.74
  5. Step 5: Solve for x
    x = 652,413,723.74/28,132.89
  6. Step 6: Final answer
    x = 23,190.43

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1.5x scale

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.