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Finding the Fourth Proportional to 18,089.93, 27,113.03 and 7,679.81

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Solution

The fourth proportional to 18,089.93, 27,113.03 and 7,679.81 is: 11,510.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,089.93 : 27,113.03 = 7,679.81 : x
  2. Step 2: Convert to fraction form
    18,089.93/27,113.03 = 7,679.81/x
  3. Step 3: Cross multiply
    18,089.93x = 27,113.03 × 7,679.81
  4. Step 4: Simplify right side
    18,089.93x = 208,222,977.11
  5. Step 5: Solve for x
    x = 208,222,977.11/18,089.93
  6. Step 6: Final answer
    x = 11,510.43

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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.