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Finding the Fourth Proportional to 15,082.29, 20,810.21 and 8,707.50

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Solution

The fourth proportional to 15,082.29, 20,810.21 and 8,707.50 is: 12,014.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,082.29 : 20,810.21 = 8,707.50 : x
  2. Step 2: Convert to fraction form
    15,082.29/20,810.21 = 8,707.50/x
  3. Step 3: Cross multiply
    15,082.29x = 20,810.21 × 8,707.50
  4. Step 4: Simplify right side
    15,082.29x = 181,204,903.58
  5. Step 5: Solve for x
    x = 181,204,903.58/15,082.29
  6. Step 6: Final answer
    x = 12,014.42

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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.