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Finding the Fourth Proportional to 18,717.95, 25,811.03 and 14,469.71

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Solution

The fourth proportional to 18,717.95, 25,811.03 and 14,469.71 is: 19,952.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.95 : 25,811.03 = 14,469.71 : x
  2. Step 2: Convert to fraction form
    18,717.95/25,811.03 = 14,469.71/x
  3. Step 3: Cross multiply
    18,717.95x = 25,811.03 × 14,469.71
  4. Step 4: Simplify right side
    18,717.95x = 373,478,026.02
  5. Step 5: Solve for x
    x = 373,478,026.02/18,717.95
  6. Step 6: Final answer
    x = 19,952.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.