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Finding the Fourth Proportional to 15,025.23, 20,715.98 and 9,638.18

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Solution

The fourth proportional to 15,025.23, 20,715.98 and 9,638.18 is: 13,288.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.23 : 20,715.98 = 9,638.18 : x
  2. Step 2: Convert to fraction form
    15,025.23/20,715.98 = 9,638.18/x
  3. Step 3: Cross multiply
    15,025.23x = 20,715.98 × 9,638.18
  4. Step 4: Simplify right side
    15,025.23x = 199,664,192.35
  5. Step 5: Solve for x
    x = 199,664,192.35/15,025.23
  6. Step 6: Final answer
    x = 13,288.59

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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.