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Finding the Fourth Proportional to 18,135.99, 27,200.85 and 4,809.07

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Solution

The fourth proportional to 18,135.99, 27,200.85 and 4,809.07 is: 7,212.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.99 : 27,200.85 = 4,809.07 : x
  2. Step 2: Convert to fraction form
    18,135.99/27,200.85 = 4,809.07/x
  3. Step 3: Cross multiply
    18,135.99x = 27,200.85 × 4,809.07
  4. Step 4: Simplify right side
    18,135.99x = 130,810,791.71
  5. Step 5: Solve for x
    x = 130,810,791.71/18,135.99
  6. Step 6: Final answer
    x = 7,212.77

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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.