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Finding the Fourth Proportional to 28,851.41, 43,272.79 and 9,127.41

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Solution

The fourth proportional to 28,851.41, 43,272.79 and 9,127.41 is: 13,689.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,851.41 : 43,272.79 = 9,127.41 : x
  2. Step 2: Convert to fraction form
    28,851.41/43,272.79 = 9,127.41/x
  3. Step 3: Cross multiply
    28,851.41x = 43,272.79 × 9,127.41
  4. Step 4: Simplify right side
    28,851.41x = 394,968,311.08
  5. Step 5: Solve for x
    x = 394,968,311.08/28,851.41
  6. Step 6: Final answer
    x = 13,689.74

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Why These Related Problems?

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