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Finding the Fourth Proportional to 28,902, 39,888 and 16,327.56

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Solution

The fourth proportional to 28,902, 39,888 and 16,327.56 is: 22,533.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,902 : 39,888 = 16,327.56 : x
  2. Step 2: Convert to fraction form
    28,902/39,888 = 16,327.56/x
  3. Step 3: Cross multiply
    28,902x = 39,888 × 16,327.56
  4. Step 4: Simplify right side
    28,902x = 651,273,713.28
  5. Step 5: Solve for x
    x = 651,273,713.28/28,902
  6. Step 6: Final answer
    x = 22,533.86

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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.