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Finding the Fourth Proportional to 18,685.96, 28,021.94 and 6,203.68

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Solution

The fourth proportional to 18,685.96, 28,021.94 and 6,203.68 is: 9,303.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.96 : 28,021.94 = 6,203.68 : x
  2. Step 2: Convert to fraction form
    18,685.96/28,021.94 = 6,203.68/x
  3. Step 3: Cross multiply
    18,685.96x = 28,021.94 × 6,203.68
  4. Step 4: Simplify right side
    18,685.96x = 173,839,148.74
  5. Step 5: Solve for x
    x = 173,839,148.74/18,685.96
  6. Step 6: Final answer
    x = 9,303.20

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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.