Home / 18,731.72-28,073.20-7,625.44

Finding the Fourth Proportional to 18,731.72, 28,073.20 and 7,625.44

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Solution

The fourth proportional to 18,731.72, 28,073.20 and 7,625.44 is: 11,428.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.72 : 28,073.20 = 7,625.44 : x
  2. Step 2: Convert to fraction form
    18,731.72/28,073.20 = 7,625.44/x
  3. Step 3: Cross multiply
    18,731.72x = 28,073.20 × 7,625.44
  4. Step 4: Simplify right side
    18,731.72x = 214,070,502.21
  5. Step 5: Solve for x
    x = 214,070,502.21/18,731.72
  6. Step 6: Final answer
    x = 11,428.24

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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.