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Finding the Fourth Proportional to 13,974.60, 20,937.60 and 12,030.60

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Solution

The fourth proportional to 13,974.60, 20,937.60 and 12,030.60 is: 18,024.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,974.60 : 20,937.60 = 12,030.60 : x
  2. Step 2: Convert to fraction form
    13,974.60/20,937.60 = 12,030.60/x
  3. Step 3: Cross multiply
    13,974.60x = 20,937.60 × 12,030.60
  4. Step 4: Simplify right side
    13,974.60x = 251,891,890.56
  5. Step 5: Solve for x
    x = 251,891,890.56/13,974.60
  6. Step 6: Final answer
    x = 18,024.98

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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.