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Finding the Fourth Proportional to 28,543.66, 39,389.97 and 15,968.50

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Solution

The fourth proportional to 28,543.66, 39,389.97 and 15,968.50 is: 22,036.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.66 : 39,389.97 = 15,968.50 : x
  2. Step 2: Convert to fraction form
    28,543.66/39,389.97 = 15,968.50/x
  3. Step 3: Cross multiply
    28,543.66x = 39,389.97 × 15,968.50
  4. Step 4: Simplify right side
    28,543.66x = 628,998,735.95
  5. Step 5: Solve for x
    x = 628,998,735.95/28,543.66
  6. Step 6: Final answer
    x = 22,036.37

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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.