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Finding the Fourth Proportional to 20,496.94, 28,285.87 and 11,544.61

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Solution

The fourth proportional to 20,496.94, 28,285.87 and 11,544.61 is: 15,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,496.94 : 28,285.87 = 11,544.61 : x
  2. Step 2: Convert to fraction form
    20,496.94/28,285.87 = 11,544.61/x
  3. Step 3: Cross multiply
    20,496.94x = 28,285.87 × 11,544.61
  4. Step 4: Simplify right side
    20,496.94x = 326,549,337.66
  5. Step 5: Solve for x
    x = 326,549,337.66/20,496.94
  6. Step 6: Final answer
    x = 15,931.61

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.