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Finding the Fourth Proportional to 18,804.38, 28,200.89 and 5,653.26

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Solution

The fourth proportional to 18,804.38, 28,200.89 and 5,653.26 is: 8,478.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,804.38 : 28,200.89 = 5,653.26 : x
  2. Step 2: Convert to fraction form
    18,804.38/28,200.89 = 5,653.26/x
  3. Step 3: Cross multiply
    18,804.38x = 28,200.89 × 5,653.26
  4. Step 4: Simplify right side
    18,804.38x = 159,426,963.40
  5. Step 5: Solve for x
    x = 159,426,963.40/18,804.38
  6. Step 6: Final answer
    x = 8,478.18

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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.