Home / 18,777.92-28,180.45-7,381.54

Finding the Fourth Proportional to 18,777.92, 28,180.45 and 7,381.54

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Solution

The fourth proportional to 18,777.92, 28,180.45 and 7,381.54 is: 11,077.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.92 : 28,180.45 = 7,381.54 : x
  2. Step 2: Convert to fraction form
    18,777.92/28,180.45 = 7,381.54/x
  3. Step 3: Cross multiply
    18,777.92x = 28,180.45 × 7,381.54
  4. Step 4: Simplify right side
    18,777.92x = 208,015,081.99
  5. Step 5: Solve for x
    x = 208,015,081.99/18,777.92
  6. Step 6: Final answer
    x = 11,077.64

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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.