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Finding the Fourth Proportional to 18,855.87, 26,021.43 and 10,358.79

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Solution

The fourth proportional to 18,855.87, 26,021.43 and 10,358.79 is: 14,295.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.87 : 26,021.43 = 10,358.79 : x
  2. Step 2: Convert to fraction form
    18,855.87/26,021.43 = 10,358.79/x
  3. Step 3: Cross multiply
    18,855.87x = 26,021.43 × 10,358.79
  4. Step 4: Simplify right side
    18,855.87x = 269,550,528.87
  5. Step 5: Solve for x
    x = 269,550,528.87/18,855.87
  6. Step 6: Final answer
    x = 14,295.31

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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.