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Finding the Fourth Proportional to 18,091.74, 27,141.90 and 7,555.89

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Solution

The fourth proportional to 18,091.74, 27,141.90 and 7,555.89 is: 11,335.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,091.74 : 27,141.90 = 7,555.89 : x
  2. Step 2: Convert to fraction form
    18,091.74/27,141.90 = 7,555.89/x
  3. Step 3: Cross multiply
    18,091.74x = 27,141.90 × 7,555.89
  4. Step 4: Simplify right side
    18,091.74x = 205,081,210.79
  5. Step 5: Solve for x
    x = 205,081,210.79/18,091.74
  6. Step 6: Final answer
    x = 11,335.63

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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.