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Finding the Fourth Proportional to 25,395.52, 38,047.20 and 19,912

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Solution

The fourth proportional to 25,395.52, 38,047.20 and 19,912 is: 29,831.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,395.52 : 38,047.20 = 19,912 : x
  2. Step 2: Convert to fraction form
    25,395.52/38,047.20 = 19,912/x
  3. Step 3: Cross multiply
    25,395.52x = 38,047.20 × 19,912
  4. Step 4: Simplify right side
    25,395.52x = 757,595,846.40
  5. Step 5: Solve for x
    x = 757,595,846.40/25,395.52
  6. Step 6: Final answer
    x = 29,831.87

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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.