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Finding the Fourth Proportional to 18,102.40, 24,973.20 and 11,028.40

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Solution

The fourth proportional to 18,102.40, 24,973.20 and 11,028.40 is: 15,214.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,102.40 : 24,973.20 = 11,028.40 : x
  2. Step 2: Convert to fraction form
    18,102.40/24,973.20 = 11,028.40/x
  3. Step 3: Cross multiply
    18,102.40x = 24,973.20 × 11,028.40
  4. Step 4: Simplify right side
    18,102.40x = 275,414,438.88
  5. Step 5: Solve for x
    x = 275,414,438.88/18,102.40
  6. Step 6: Final answer
    x = 15,214.25

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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.