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Finding the Fourth Proportional to 18,709.76, 28,048.44 and 8,843.96

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Solution

The fourth proportional to 18,709.76, 28,048.44 and 8,843.96 is: 13,258.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.76 : 28,048.44 = 8,843.96 : x
  2. Step 2: Convert to fraction form
    18,709.76/28,048.44 = 8,843.96/x
  3. Step 3: Cross multiply
    18,709.76x = 28,048.44 × 8,843.96
  4. Step 4: Simplify right side
    18,709.76x = 248,059,281.42
  5. Step 5: Solve for x
    x = 248,059,281.42/18,709.76
  6. Step 6: Final answer
    x = 13,258.28

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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.