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Finding the Fourth Proportional to 18,267.40, 27,422.70 and 18,137.80

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Solution

The fourth proportional to 18,267.40, 27,422.70 and 18,137.80 is: 27,228.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,267.40 : 27,422.70 = 18,137.80 : x
  2. Step 2: Convert to fraction form
    18,267.40/27,422.70 = 18,137.80/x
  3. Step 3: Cross multiply
    18,267.40x = 27,422.70 × 18,137.80
  4. Step 4: Simplify right side
    18,267.40x = 497,387,448.06
  5. Step 5: Solve for x
    x = 497,387,448.06/18,267.40
  6. Step 6: Final answer
    x = 27,228.15

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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.