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Finding the Fourth Proportional to 18,117.66, 27,171.93 and 7,020.54

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Solution

The fourth proportional to 18,117.66, 27,171.93 and 7,020.54 is: 10,529.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.66 : 27,171.93 = 7,020.54 : x
  2. Step 2: Convert to fraction form
    18,117.66/27,171.93 = 7,020.54/x
  3. Step 3: Cross multiply
    18,117.66x = 27,171.93 × 7,020.54
  4. Step 4: Simplify right side
    18,117.66x = 190,761,621.44
  5. Step 5: Solve for x
    x = 190,761,621.44/18,117.66
  6. Step 6: Final answer
    x = 10,529.04

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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.