Home / 18,731.50-28,097.28-7,644.22

Finding the Fourth Proportional to 18,731.50, 28,097.28 and 7,644.22

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Solution

The fourth proportional to 18,731.50, 28,097.28 and 7,644.22 is: 11,466.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.50 : 28,097.28 = 7,644.22 : x
  2. Step 2: Convert to fraction form
    18,731.50/28,097.28 = 7,644.22/x
  3. Step 3: Cross multiply
    18,731.50x = 28,097.28 × 7,644.22
  4. Step 4: Simplify right side
    18,731.50x = 214,781,789.72
  5. Step 5: Solve for x
    x = 214,781,789.72/18,731.50
  6. Step 6: Final answer
    x = 11,466.34

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1.5x scale

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.