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Finding the Fourth Proportional to 18,600.54, 27,900.81 and 8,210.22

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Solution

The fourth proportional to 18,600.54, 27,900.81 and 8,210.22 is: 12,315.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,600.54 : 27,900.81 = 8,210.22 : x
  2. Step 2: Convert to fraction form
    18,600.54/27,900.81 = 8,210.22/x
  3. Step 3: Cross multiply
    18,600.54x = 27,900.81 × 8,210.22
  4. Step 4: Simplify right side
    18,600.54x = 229,071,788.28
  5. Step 5: Solve for x
    x = 229,071,788.28/18,600.54
  6. Step 6: Final answer
    x = 12,315.33

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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.