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Finding the Fourth Proportional to 18,258.78, 27,368.10 and 7,163.40

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Solution

The fourth proportional to 18,258.78, 27,368.10 and 7,163.40 is: 10,737.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,258.78 : 27,368.10 = 7,163.40 : x
  2. Step 2: Convert to fraction form
    18,258.78/27,368.10 = 7,163.40/x
  3. Step 3: Cross multiply
    18,258.78x = 27,368.10 × 7,163.40
  4. Step 4: Simplify right side
    18,258.78x = 196,048,647.54
  5. Step 5: Solve for x
    x = 196,048,647.54/18,258.78
  6. Step 6: Final answer
    x = 10,737.23

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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.