Home / 18,129.42-27,177.73-6,439.91

Finding the Fourth Proportional to 18,129.42, 27,177.73 and 6,439.91

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Solution

The fourth proportional to 18,129.42, 27,177.73 and 6,439.91 is: 9,654.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.42 : 27,177.73 = 6,439.91 : x
  2. Step 2: Convert to fraction form
    18,129.42/27,177.73 = 6,439.91/x
  3. Step 3: Cross multiply
    18,129.42x = 27,177.73 × 6,439.91
  4. Step 4: Simplify right side
    18,129.42x = 175,021,983.22
  5. Step 5: Solve for x
    x = 175,021,983.22/18,129.42
  6. Step 6: Final answer
    x = 9,654.03

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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.