Home / 18,605.35-27,911.58-6,128.99

Finding the Fourth Proportional to 18,605.35, 27,911.58 and 6,128.99

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Solution

The fourth proportional to 18,605.35, 27,911.58 and 6,128.99 is: 9,194.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.35 : 27,911.58 = 6,128.99 : x
  2. Step 2: Convert to fraction form
    18,605.35/27,911.58 = 6,128.99/x
  3. Step 3: Cross multiply
    18,605.35x = 27,911.58 × 6,128.99
  4. Step 4: Simplify right side
    18,605.35x = 171,069,794.70
  5. Step 5: Solve for x
    x = 171,069,794.70/18,605.35
  6. Step 6: Final answer
    x = 9,194.66

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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.