Home / 18,118.32-27,186.75-8,256.32

Finding the Fourth Proportional to 18,118.32, 27,186.75 and 8,256.32

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Solution

The fourth proportional to 18,118.32, 27,186.75 and 8,256.32 is: 12,388.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.32 : 27,186.75 = 8,256.32 : x
  2. Step 2: Convert to fraction form
    18,118.32/27,186.75 = 8,256.32/x
  3. Step 3: Cross multiply
    18,118.32x = 27,186.75 × 8,256.32
  4. Step 4: Simplify right side
    18,118.32x = 224,462,507.76
  5. Step 5: Solve for x
    x = 224,462,507.76/18,118.32
  6. Step 6: Final answer
    x = 12,388.70

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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.