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Finding the Fourth Proportional to 15,003.25, 20,697.59 and 9,699.77

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Solution

The fourth proportional to 15,003.25, 20,697.59 and 9,699.77 is: 13,381.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.25 : 20,697.59 = 9,699.77 : x
  2. Step 2: Convert to fraction form
    15,003.25/20,697.59 = 9,699.77/x
  3. Step 3: Cross multiply
    15,003.25x = 20,697.59 × 9,699.77
  4. Step 4: Simplify right side
    15,003.25x = 200,761,938.55
  5. Step 5: Solve for x
    x = 200,761,938.55/15,003.25
  6. Step 6: Final answer
    x = 13,381.23

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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.