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Finding the Fourth Proportional to 18,804.96, 28,207.20 and 5,656.80

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Solution

The fourth proportional to 18,804.96, 28,207.20 and 5,656.80 is: 8,485.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,804.96 : 28,207.20 = 5,656.80 : x
  2. Step 2: Convert to fraction form
    18,804.96/28,207.20 = 5,656.80/x
  3. Step 3: Cross multiply
    18,804.96x = 28,207.20 × 5,656.80
  4. Step 4: Simplify right side
    18,804.96x = 159,562,488.96
  5. Step 5: Solve for x
    x = 159,562,488.96/18,804.96
  6. Step 6: Final answer
    x = 8,485.13

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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.