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Finding the Fourth Proportional to 18,325.31, 25,289.42 and 9,941.81

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Solution

The fourth proportional to 18,325.31, 25,289.42 and 9,941.81 is: 13,719.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,325.31 : 25,289.42 = 9,941.81 : x
  2. Step 2: Convert to fraction form
    18,325.31/25,289.42 = 9,941.81/x
  3. Step 3: Cross multiply
    18,325.31x = 25,289.42 × 9,941.81
  4. Step 4: Simplify right side
    18,325.31x = 251,422,432.49
  5. Step 5: Solve for x
    x = 251,422,432.49/18,325.31
  6. Step 6: Final answer
    x = 13,719.96

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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.