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Finding the Fourth Proportional to 18,626.31, 25,704.31 and 10,242.81

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Solution

The fourth proportional to 18,626.31, 25,704.31 and 10,242.81 is: 14,135.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.31 : 25,704.31 = 10,242.81 : x
  2. Step 2: Convert to fraction form
    18,626.31/25,704.31 = 10,242.81/x
  3. Step 3: Cross multiply
    18,626.31x = 25,704.31 × 10,242.81
  4. Step 4: Simplify right side
    18,626.31x = 263,284,363.51
  5. Step 5: Solve for x
    x = 263,284,363.51/18,626.31
  6. Step 6: Final answer
    x = 14,135.08

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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.