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Finding the Fourth Proportional to 13,433.01, 20,144.25 and 7,887.75

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Solution

The fourth proportional to 13,433.01, 20,144.25 and 7,887.75 is: 11,828.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,433.01 : 20,144.25 = 7,887.75 : x
  2. Step 2: Convert to fraction form
    13,433.01/20,144.25 = 7,887.75/x
  3. Step 3: Cross multiply
    13,433.01x = 20,144.25 × 7,887.75
  4. Step 4: Simplify right side
    13,433.01x = 158,892,807.94
  5. Step 5: Solve for x
    x = 158,892,807.94/13,433.01
  6. Step 6: Final answer
    x = 11,828.53

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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.