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Finding the Fourth Proportional to 18,713.14, 28,063.63 and 6,229.81

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Solution

The fourth proportional to 18,713.14, 28,063.63 and 6,229.81 is: 9,342.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713.14 : 28,063.63 = 6,229.81 : x
  2. Step 2: Convert to fraction form
    18,713.14/28,063.63 = 6,229.81/x
  3. Step 3: Cross multiply
    18,713.14x = 28,063.63 × 6,229.81
  4. Step 4: Simplify right side
    18,713.14x = 174,830,911.34
  5. Step 5: Solve for x
    x = 174,830,911.34/18,713.14
  6. Step 6: Final answer
    x = 9,342.68

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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.