Home / 18,138.31-27,213.35-8,897.83

Finding the Fourth Proportional to 18,138.31, 27,213.35 and 8,897.83

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Solution

The fourth proportional to 18,138.31, 27,213.35 and 8,897.83 is: 13,349.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138.31 : 27,213.35 = 8,897.83 : x
  2. Step 2: Convert to fraction form
    18,138.31/27,213.35 = 8,897.83/x
  3. Step 3: Cross multiply
    18,138.31x = 27,213.35 × 8,897.83
  4. Step 4: Simplify right side
    18,138.31x = 242,139,717.54
  5. Step 5: Solve for x
    x = 242,139,717.54/18,138.31
  6. Step 6: Final answer
    x = 13,349.63

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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.