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Finding the Fourth Proportional to 18,671.92, 28,009.50 and 6,828.94

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Solution

The fourth proportional to 18,671.92, 28,009.50 and 6,828.94 is: 10,244.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.92 : 28,009.50 = 6,828.94 : x
  2. Step 2: Convert to fraction form
    18,671.92/28,009.50 = 6,828.94/x
  3. Step 3: Cross multiply
    18,671.92x = 28,009.50 × 6,828.94
  4. Step 4: Simplify right side
    18,671.92x = 191,275,194.93
  5. Step 5: Solve for x
    x = 191,275,194.93/18,671.92
  6. Step 6: Final answer
    x = 10,244.00

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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.