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Finding the Fourth Proportional to 18,812.93, 25,961.88 and 10,429.43

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Solution

The fourth proportional to 18,812.93, 25,961.88 and 10,429.43 is: 14,392.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,812.93 : 25,961.88 = 10,429.43 : x
  2. Step 2: Convert to fraction form
    18,812.93/25,961.88 = 10,429.43/x
  3. Step 3: Cross multiply
    18,812.93x = 25,961.88 × 10,429.43
  4. Step 4: Simplify right side
    18,812.93x = 270,767,610.13
  5. Step 5: Solve for x
    x = 270,767,610.13/18,812.93
  6. Step 6: Final answer
    x = 14,392.63

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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.