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Finding the Fourth Proportional to 18,705.94, 28,060.83 and 6,229.71

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Solution

The fourth proportional to 18,705.94, 28,060.83 and 6,229.71 is: 9,345.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.94 : 28,060.83 = 6,229.71 : x
  2. Step 2: Convert to fraction form
    18,705.94/28,060.83 = 6,229.71/x
  3. Step 3: Cross multiply
    18,705.94x = 28,060.83 × 6,229.71
  4. Step 4: Simplify right side
    18,705.94x = 174,810,833.26
  5. Step 5: Solve for x
    x = 174,810,833.26/18,705.94
  6. Step 6: Final answer
    x = 9,345.21

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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.