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Finding the Fourth Proportional to 15,057.96, 20,779.11 and 8,343.19

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Solution

The fourth proportional to 15,057.96, 20,779.11 and 8,343.19 is: 11,513.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,057.96 : 20,779.11 = 8,343.19 : x
  2. Step 2: Convert to fraction form
    15,057.96/20,779.11 = 8,343.19/x
  3. Step 3: Cross multiply
    15,057.96x = 20,779.11 × 8,343.19
  4. Step 4: Simplify right side
    15,057.96x = 173,364,062.76
  5. Step 5: Solve for x
    x = 173,364,062.76/15,057.96
  6. Step 6: Final answer
    x = 11,513.12

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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.