Home / 18,215.82-27,312.66-7,120.44

Finding the Fourth Proportional to 18,215.82, 27,312.66 and 7,120.44

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Solution

The fourth proportional to 18,215.82, 27,312.66 and 7,120.44 is: 10,676.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.82 : 27,312.66 = 7,120.44 : x
  2. Step 2: Convert to fraction form
    18,215.82/27,312.66 = 7,120.44/x
  3. Step 3: Cross multiply
    18,215.82x = 27,312.66 × 7,120.44
  4. Step 4: Simplify right side
    18,215.82x = 194,478,156.77
  5. Step 5: Solve for x
    x = 194,478,156.77/18,215.82
  6. Step 6: Final answer
    x = 10,676.33

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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.