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Finding the Fourth Proportional to 28,811.88, 43,214.16 and 11,294.01

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Solution

The fourth proportional to 28,811.88, 43,214.16 and 11,294.01 is: 16,939.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811.88 : 43,214.16 = 11,294.01 : x
  2. Step 2: Convert to fraction form
    28,811.88/43,214.16 = 11,294.01/x
  3. Step 3: Cross multiply
    28,811.88x = 43,214.16 × 11,294.01
  4. Step 4: Simplify right side
    28,811.88x = 488,061,155.18
  5. Step 5: Solve for x
    x = 488,061,155.18/28,811.88
  6. Step 6: Final answer
    x = 16,939.58

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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.