Home / 28,731.78-43,098.21-9,009.90

Finding the Fourth Proportional to 28,731.78, 43,098.21 and 9,009.90

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Solution

The fourth proportional to 28,731.78, 43,098.21 and 9,009.90 is: 13,515.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731.78 : 43,098.21 = 9,009.90 : x
  2. Step 2: Convert to fraction form
    28,731.78/43,098.21 = 9,009.90/x
  3. Step 3: Cross multiply
    28,731.78x = 43,098.21 × 9,009.90
  4. Step 4: Simplify right side
    28,731.78x = 388,310,562.28
  5. Step 5: Solve for x
    x = 388,310,562.28/28,731.78
  6. Step 6: Final answer
    x = 13,515.02

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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.