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Finding the Fourth Proportional to 18,141.76, 27,209.44 and 4,991.01

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Solution

The fourth proportional to 18,141.76, 27,209.44 and 4,991.01 is: 7,485.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,141.76 : 27,209.44 = 4,991.01 : x
  2. Step 2: Convert to fraction form
    18,141.76/27,209.44 = 4,991.01/x
  3. Step 3: Cross multiply
    18,141.76x = 27,209.44 × 4,991.01
  4. Step 4: Simplify right side
    18,141.76x = 135,802,587.13
  5. Step 5: Solve for x
    x = 135,802,587.13/18,141.76
  6. Step 6: Final answer
    x = 7,485.63

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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.