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Finding the Fourth Proportional to 18,394, 25,381.96 and 10,325.81

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Solution

The fourth proportional to 18,394, 25,381.96 and 10,325.81 is: 14,248.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,394 : 25,381.96 = 10,325.81 : x
  2. Step 2: Convert to fraction form
    18,394/25,381.96 = 10,325.81/x
  3. Step 3: Cross multiply
    18,394x = 25,381.96 × 10,325.81
  4. Step 4: Simplify right side
    18,394x = 262,089,296.39
  5. Step 5: Solve for x
    x = 262,089,296.39/18,394
  6. Step 6: Final answer
    x = 14,248.63

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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.