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Finding the Fourth Proportional to 18,022.40, 27,059.20 and 11,110.40

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Solution

The fourth proportional to 18,022.40, 27,059.20 and 11,110.40 is: 16,681.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,022.40 : 27,059.20 = 11,110.40 : x
  2. Step 2: Convert to fraction form
    18,022.40/27,059.20 = 11,110.40/x
  3. Step 3: Cross multiply
    18,022.40x = 27,059.20 × 11,110.40
  4. Step 4: Simplify right side
    18,022.40x = 300,638,535.68
  5. Step 5: Solve for x
    x = 300,638,535.68/18,022.40
  6. Step 6: Final answer
    x = 16,681.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.