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Finding the Fourth Proportional to 18,854.66, 28,285.86 and 5,528.09

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Solution

The fourth proportional to 18,854.66, 28,285.86 and 5,528.09 is: 8,293.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.66 : 28,285.86 = 5,528.09 : x
  2. Step 2: Convert to fraction form
    18,854.66/28,285.86 = 5,528.09/x
  3. Step 3: Cross multiply
    18,854.66x = 28,285.86 × 5,528.09
  4. Step 4: Simplify right side
    18,854.66x = 156,366,638.38
  5. Step 5: Solve for x
    x = 156,366,638.38/18,854.66
  6. Step 6: Final answer
    x = 8,293.26

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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.