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Finding the Fourth Proportional to 25,945.36, 38,892.03 and 10,128.64

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Solution

The fourth proportional to 25,945.36, 38,892.03 and 10,128.64 is: 15,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,945.36 : 38,892.03 = 10,128.64 : x
  2. Step 2: Convert to fraction form
    25,945.36/38,892.03 = 10,128.64/x
  3. Step 3: Cross multiply
    25,945.36x = 38,892.03 × 10,128.64
  4. Step 4: Simplify right side
    25,945.36x = 393,923,222.87
  5. Step 5: Solve for x
    x = 393,923,222.87/25,945.36
  6. Step 6: Final answer
    x = 15,182.80

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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.