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Finding the Fourth Proportional to 13,259.28, 19,845.18 and 11,801.28

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Solution

The fourth proportional to 13,259.28, 19,845.18 and 11,801.28 is: 17,662.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259.28 : 19,845.18 = 11,801.28 : x
  2. Step 2: Convert to fraction form
    13,259.28/19,845.18 = 11,801.28/x
  3. Step 3: Cross multiply
    13,259.28x = 19,845.18 × 11,801.28
  4. Step 4: Simplify right side
    13,259.28x = 234,198,525.83
  5. Step 5: Solve for x
    x = 234,198,525.83/13,259.28
  6. Step 6: Final answer
    x = 17,662.99

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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.