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Finding the Fourth Proportional to 18,777, 25,912.80 and 10,394.04

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Solution

The fourth proportional to 18,777, 25,912.80 and 10,394.04 is: 14,344.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777 : 25,912.80 = 10,394.04 : x
  2. Step 2: Convert to fraction form
    18,777/25,912.80 = 10,394.04/x
  3. Step 3: Cross multiply
    18,777x = 25,912.80 × 10,394.04
  4. Step 4: Simplify right side
    18,777x = 269,338,679.71
  5. Step 5: Solve for x
    x = 269,338,679.71/18,777
  6. Step 6: Final answer
    x = 14,344.07

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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.