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Finding the Fourth Proportional to 19,899.46, 29,851.13 and 7,416.56

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Solution

The fourth proportional to 19,899.46, 29,851.13 and 7,416.56 is: 11,125.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,899.46 : 29,851.13 = 7,416.56 : x
  2. Step 2: Convert to fraction form
    19,899.46/29,851.13 = 7,416.56/x
  3. Step 3: Cross multiply
    19,899.46x = 29,851.13 × 7,416.56
  4. Step 4: Simplify right side
    19,899.46x = 221,392,771.34
  5. Step 5: Solve for x
    x = 221,392,771.34/19,899.46
  6. Step 6: Final answer
    x = 11,125.57

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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.