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Finding the Fourth Proportional to 18,783.96, 25,921.90 and 10,826.26

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Solution

The fourth proportional to 18,783.96, 25,921.90 and 10,826.26 is: 14,940.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.96 : 25,921.90 = 10,826.26 : x
  2. Step 2: Convert to fraction form
    18,783.96/25,921.90 = 10,826.26/x
  3. Step 3: Cross multiply
    18,783.96x = 25,921.90 × 10,826.26
  4. Step 4: Simplify right side
    18,783.96x = 280,637,229.09
  5. Step 5: Solve for x
    x = 280,637,229.09/18,783.96
  6. Step 6: Final answer
    x = 14,940.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.