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Finding the Fourth Proportional to 20,647.59, 28,441.58 and 16,657.53

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Solution

The fourth proportional to 20,647.59, 28,441.58 and 16,657.53 is: 22,945.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.59 : 28,441.58 = 16,657.53 : x
  2. Step 2: Convert to fraction form
    20,647.59/28,441.58 = 16,657.53/x
  3. Step 3: Cross multiply
    20,647.59x = 28,441.58 × 16,657.53
  4. Step 4: Simplify right side
    20,647.59x = 473,766,388.81
  5. Step 5: Solve for x
    x = 473,766,388.81/20,647.59
  6. Step 6: Final answer
    x = 22,945.36

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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.