Home / 18,427.12-27,621.62-8,558.34

Finding the Fourth Proportional to 18,427.12, 27,621.62 and 8,558.34

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Solution

The fourth proportional to 18,427.12, 27,621.62 and 8,558.34 is: 12,828.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.12 : 27,621.62 = 8,558.34 : x
  2. Step 2: Convert to fraction form
    18,427.12/27,621.62 = 8,558.34/x
  3. Step 3: Cross multiply
    18,427.12x = 27,621.62 × 8,558.34
  4. Step 4: Simplify right side
    18,427.12x = 236,395,215.31
  5. Step 5: Solve for x
    x = 236,395,215.31/18,427.12
  6. Step 6: Final answer
    x = 12,828.66

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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.