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Finding the Fourth Proportional to 18,471.16, 27,706.74 and 4,620.16

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Solution

The fourth proportional to 18,471.16, 27,706.74 and 4,620.16 is: 6,930.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.16 : 27,706.74 = 4,620.16 : x
  2. Step 2: Convert to fraction form
    18,471.16/27,706.74 = 4,620.16/x
  3. Step 3: Cross multiply
    18,471.16x = 27,706.74 × 4,620.16
  4. Step 4: Simplify right side
    18,471.16x = 128,009,571.88
  5. Step 5: Solve for x
    x = 128,009,571.88/18,471.16
  6. Step 6: Final answer
    x = 6,930.24

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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.