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Finding the Fourth Proportional to 15,626.46, 21,565.11 and 8,913.18

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Solution

The fourth proportional to 15,626.46, 21,565.11 and 8,913.18 is: 12,300.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,626.46 : 21,565.11 = 8,913.18 : x
  2. Step 2: Convert to fraction form
    15,626.46/21,565.11 = 8,913.18/x
  3. Step 3: Cross multiply
    15,626.46x = 21,565.11 × 8,913.18
  4. Step 4: Simplify right side
    15,626.46x = 192,213,707.15
  5. Step 5: Solve for x
    x = 192,213,707.15/15,626.46
  6. Step 6: Final answer
    x = 12,300.53

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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.