Home / 19,874.20-29,768.10-12,069.40

Finding the Fourth Proportional to 19,874.20, 29,768.10 and 12,069.40

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Solution

The fourth proportional to 19,874.20, 29,768.10 and 12,069.40 is: 18,077.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,874.20 : 29,768.10 = 12,069.40 : x
  2. Step 2: Convert to fraction form
    19,874.20/29,768.10 = 12,069.40/x
  3. Step 3: Cross multiply
    19,874.20x = 29,768.10 × 12,069.40
  4. Step 4: Simplify right side
    19,874.20x = 359,283,106.14
  5. Step 5: Solve for x
    x = 359,283,106.14/19,874.20
  6. Step 6: Final answer
    x = 18,077.87

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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.