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Finding the Fourth Proportional to 18,682.02, 25,783 and 13,958.10

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Solution

The fourth proportional to 18,682.02, 25,783 and 13,958.10 is: 19,263.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.02 : 25,783 = 13,958.10 : x
  2. Step 2: Convert to fraction form
    18,682.02/25,783 = 13,958.10/x
  3. Step 3: Cross multiply
    18,682.02x = 25,783 × 13,958.10
  4. Step 4: Simplify right side
    18,682.02x = 359,881,692.30
  5. Step 5: Solve for x
    x = 359,881,692.30/18,682.02
  6. Step 6: Final answer
    x = 19,263.53

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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.