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Finding the Fourth Proportional to 28,822.63, 39,775.83 and 16,247.38

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Solution

The fourth proportional to 28,822.63, 39,775.83 and 16,247.38 is: 22,421.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,822.63 : 39,775.83 = 16,247.38 : x
  2. Step 2: Convert to fraction form
    28,822.63/39,775.83 = 16,247.38/x
  3. Step 3: Cross multiply
    28,822.63x = 39,775.83 × 16,247.38
  4. Step 4: Simplify right side
    28,822.63x = 646,253,024.83
  5. Step 5: Solve for x
    x = 646,253,024.83/28,822.63
  6. Step 6: Final answer
    x = 22,421.72

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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.