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Finding the Fourth Proportional to 18,483.52, 27,730.60 and 8,628.64

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Solution

The fourth proportional to 18,483.52, 27,730.60 and 8,628.64 is: 12,945.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.52 : 27,730.60 = 8,628.64 : x
  2. Step 2: Convert to fraction form
    18,483.52/27,730.60 = 8,628.64/x
  3. Step 3: Cross multiply
    18,483.52x = 27,730.60 × 8,628.64
  4. Step 4: Simplify right side
    18,483.52x = 239,277,364.38
  5. Step 5: Solve for x
    x = 239,277,364.38/18,483.52
  6. Step 6: Final answer
    x = 12,945.44

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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.