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Finding the Fourth Proportional to 18,804.24, 28,208.78 and 6,318.88

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Solution

The fourth proportional to 18,804.24, 28,208.78 and 6,318.88 is: 9,479.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,804.24 : 28,208.78 = 6,318.88 : x
  2. Step 2: Convert to fraction form
    18,804.24/28,208.78 = 6,318.88/x
  3. Step 3: Cross multiply
    18,804.24x = 28,208.78 × 6,318.88
  4. Step 4: Simplify right side
    18,804.24x = 178,247,895.77
  5. Step 5: Solve for x
    x = 178,247,895.77/18,804.24
  6. Step 6: Final answer
    x = 9,479.13

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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.