Home / 18,111.99-27,186.42-12,490.02

Finding the Fourth Proportional to 18,111.99, 27,186.42 and 12,490.02

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Solution

The fourth proportional to 18,111.99, 27,186.42 and 12,490.02 is: 18,747.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,111.99 : 27,186.42 = 12,490.02 : x
  2. Step 2: Convert to fraction form
    18,111.99/27,186.42 = 12,490.02/x
  3. Step 3: Cross multiply
    18,111.99x = 27,186.42 × 12,490.02
  4. Step 4: Simplify right side
    18,111.99x = 339,558,793.60
  5. Step 5: Solve for x
    x = 339,558,793.60/18,111.99
  6. Step 6: Final answer
    x = 18,747.74

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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.