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Finding the Fourth Proportional to 18,622, 25,698.45 and 10,238.50

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Solution

The fourth proportional to 18,622, 25,698.45 and 10,238.50 is: 14,129.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622 : 25,698.45 = 10,238.50 : x
  2. Step 2: Convert to fraction form
    18,622/25,698.45 = 10,238.50/x
  3. Step 3: Cross multiply
    18,622x = 25,698.45 × 10,238.50
  4. Step 4: Simplify right side
    18,622x = 263,113,580.33
  5. Step 5: Solve for x
    x = 263,113,580.33/18,622
  6. Step 6: Final answer
    x = 14,129.18

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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.