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Finding the Fourth Proportional to 18,143.51, 27,202.50 and 7,040.84

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Solution

The fourth proportional to 18,143.51, 27,202.50 and 7,040.84 is: 10,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.51 : 27,202.50 = 7,040.84 : x
  2. Step 2: Convert to fraction form
    18,143.51/27,202.50 = 7,040.84/x
  3. Step 3: Cross multiply
    18,143.51x = 27,202.50 × 7,040.84
  4. Step 4: Simplify right side
    18,143.51x = 191,528,314.09
  5. Step 5: Solve for x
    x = 191,528,314.09/18,143.51
  6. Step 6: Final answer
    x = 10,556.30

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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.