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Finding the Fourth Proportional to 18,351.30, 25,310.70 and 12,373.50

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Solution

The fourth proportional to 18,351.30, 25,310.70 and 12,373.50 is: 17,065.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.30 : 25,310.70 = 12,373.50 : x
  2. Step 2: Convert to fraction form
    18,351.30/25,310.70 = 12,373.50/x
  3. Step 3: Cross multiply
    18,351.30x = 25,310.70 × 12,373.50
  4. Step 4: Simplify right side
    18,351.30x = 313,181,946.45
  5. Step 5: Solve for x
    x = 313,181,946.45/18,351.30
  6. Step 6: Final answer
    x = 17,065.93

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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.