Home / 18,118.20-27,177.30-11,897.40

Finding the Fourth Proportional to 18,118.20, 27,177.30 and 11,897.40

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Solution

The fourth proportional to 18,118.20, 27,177.30 and 11,897.40 is: 17,846.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.20 : 27,177.30 = 11,897.40 : x
  2. Step 2: Convert to fraction form
    18,118.20/27,177.30 = 11,897.40/x
  3. Step 3: Cross multiply
    18,118.20x = 27,177.30 × 11,897.40
  4. Step 4: Simplify right side
    18,118.20x = 323,339,209.02
  5. Step 5: Solve for x
    x = 323,339,209.02/18,118.20
  6. Step 6: Final answer
    x = 17,846.10

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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.