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Finding the Fourth Proportional to 18,172.50, 27,258.75 and 5,860.50

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Solution

The fourth proportional to 18,172.50, 27,258.75 and 5,860.50 is: 8,790.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,172.50 : 27,258.75 = 5,860.50 : x
  2. Step 2: Convert to fraction form
    18,172.50/27,258.75 = 5,860.50/x
  3. Step 3: Cross multiply
    18,172.50x = 27,258.75 × 5,860.50
  4. Step 4: Simplify right side
    18,172.50x = 159,749,904.38
  5. Step 5: Solve for x
    x = 159,749,904.38/18,172.50
  6. Step 6: Final answer
    x = 8,790.75

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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.