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Finding the Fourth Proportional to 18,630.32, 27,945.39 and 4,590.32

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Solution

The fourth proportional to 18,630.32, 27,945.39 and 4,590.32 is: 6,885.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.32 : 27,945.39 = 4,590.32 : x
  2. Step 2: Convert to fraction form
    18,630.32/27,945.39 = 4,590.32/x
  3. Step 3: Cross multiply
    18,630.32x = 27,945.39 × 4,590.32
  4. Step 4: Simplify right side
    18,630.32x = 128,278,282.62
  5. Step 5: Solve for x
    x = 128,278,282.62/18,630.32
  6. Step 6: Final answer
    x = 6,885.46

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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.