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Finding the Fourth Proportional to 18,698.73, 28,048.10 and 5,551.22

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Solution

The fourth proportional to 18,698.73, 28,048.10 and 5,551.22 is: 8,326.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.73 : 28,048.10 = 5,551.22 : x
  2. Step 2: Convert to fraction form
    18,698.73/28,048.10 = 5,551.22/x
  3. Step 3: Cross multiply
    18,698.73x = 28,048.10 × 5,551.22
  4. Step 4: Simplify right side
    18,698.73x = 155,701,005.69
  5. Step 5: Solve for x
    x = 155,701,005.69/18,698.73
  6. Step 6: Final answer
    x = 8,326.82

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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.