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Finding the Fourth Proportional to 18,622.98, 27,940.14 and 5,475.47

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Solution

The fourth proportional to 18,622.98, 27,940.14 and 5,475.47 is: 8,214.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.98 : 27,940.14 = 5,475.47 : x
  2. Step 2: Convert to fraction form
    18,622.98/27,940.14 = 5,475.47/x
  3. Step 3: Cross multiply
    18,622.98x = 27,940.14 × 5,475.47
  4. Step 4: Simplify right side
    18,622.98x = 152,985,258.67
  5. Step 5: Solve for x
    x = 152,985,258.67/18,622.98
  6. Step 6: Final answer
    x = 8,214.86

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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.