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Finding the Fourth Proportional to 28,693.64, 39,601.50 and 22,629.98

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Solution

The fourth proportional to 28,693.64, 39,601.50 and 22,629.98 is: 31,232.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,693.64 : 39,601.50 = 22,629.98 : x
  2. Step 2: Convert to fraction form
    28,693.64/39,601.50 = 22,629.98/x
  3. Step 3: Cross multiply
    28,693.64x = 39,601.50 × 22,629.98
  4. Step 4: Simplify right side
    28,693.64x = 896,181,152.97
  5. Step 5: Solve for x
    x = 896,181,152.97/28,693.64
  6. Step 6: Final answer
    x = 31,232.75

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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.