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Finding the Fourth Proportional to 19,812.10, 29,660.68 and 15,416.22

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Solution

The fourth proportional to 19,812.10, 29,660.68 and 15,416.22 is: 23,079.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.10 : 29,660.68 = 15,416.22 : x
  2. Step 2: Convert to fraction form
    19,812.10/29,660.68 = 15,416.22/x
  3. Step 3: Cross multiply
    19,812.10x = 29,660.68 × 15,416.22
  4. Step 4: Simplify right side
    19,812.10x = 457,255,568.23
  5. Step 5: Solve for x
    x = 457,255,568.23/19,812.10
  6. Step 6: Final answer
    x = 23,079.61

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.