Home / 18,521.89-27,777.90-5,194.15

Finding the Fourth Proportional to 18,521.89, 27,777.90 and 5,194.15

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Solution

The fourth proportional to 18,521.89, 27,777.90 and 5,194.15 is: 7,789.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521.89 : 27,777.90 = 5,194.15 : x
  2. Step 2: Convert to fraction form
    18,521.89/27,777.90 = 5,194.15/x
  3. Step 3: Cross multiply
    18,521.89x = 27,777.90 × 5,194.15
  4. Step 4: Simplify right side
    18,521.89x = 144,282,579.29
  5. Step 5: Solve for x
    x = 144,282,579.29/18,521.89
  6. Step 6: Final answer
    x = 7,789.84

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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.