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Finding the Fourth Proportional to 18,807.28, 25,954 and 10,423.84

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Solution

The fourth proportional to 18,807.28, 25,954 and 10,423.84 is: 14,384.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.28 : 25,954 = 10,423.84 : x
  2. Step 2: Convert to fraction form
    18,807.28/25,954 = 10,423.84/x
  3. Step 3: Cross multiply
    18,807.28x = 25,954 × 10,423.84
  4. Step 4: Simplify right side
    18,807.28x = 270,540,343.36
  5. Step 5: Solve for x
    x = 270,540,343.36/18,807.28
  6. Step 6: Final answer
    x = 14,384.87

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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.