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Finding the Fourth Proportional to 18,255.40, 27,404.70 and 18,125.80

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Solution

The fourth proportional to 18,255.40, 27,404.70 and 18,125.80 is: 27,210.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,255.40 : 27,404.70 = 18,125.80 : x
  2. Step 2: Convert to fraction form
    18,255.40/27,404.70 = 18,125.80/x
  3. Step 3: Cross multiply
    18,255.40x = 27,404.70 × 18,125.80
  4. Step 4: Simplify right side
    18,255.40x = 496,732,111.26
  5. Step 5: Solve for x
    x = 496,732,111.26/18,255.40
  6. Step 6: Final answer
    x = 27,210.15

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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.