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Finding the Fourth Proportional to 28,747.31, 43,120.86 and 9,027.45

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Solution

The fourth proportional to 28,747.31, 43,120.86 and 9,027.45 is: 13,541.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,747.31 : 43,120.86 = 9,027.45 : x
  2. Step 2: Convert to fraction form
    28,747.31/43,120.86 = 9,027.45/x
  3. Step 3: Cross multiply
    28,747.31x = 43,120.86 × 9,027.45
  4. Step 4: Simplify right side
    28,747.31x = 389,271,373.75
  5. Step 5: Solve for x
    x = 389,271,373.75/28,747.31
  6. Step 6: Final answer
    x = 13,541.14

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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.