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Finding the Fourth Proportional to 28,569.83, 42,866.03 and 8,849.93

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Solution

The fourth proportional to 28,569.83, 42,866.03 and 8,849.93 is: 13,278.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.83 : 42,866.03 = 8,849.93 : x
  2. Step 2: Convert to fraction form
    28,569.83/42,866.03 = 8,849.93/x
  3. Step 3: Cross multiply
    28,569.83x = 42,866.03 × 8,849.93
  4. Step 4: Simplify right side
    28,569.83x = 379,361,122.89
  5. Step 5: Solve for x
    x = 379,361,122.89/28,569.83
  6. Step 6: Final answer
    x = 13,278.38

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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.