Home / 18,967.80-28,464.40-7,874.50

Finding the Fourth Proportional to 18,967.80, 28,464.40 and 7,874.50

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Solution

The fourth proportional to 18,967.80, 28,464.40 and 7,874.50 is: 11,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,967.80 : 28,464.40 = 7,874.50 : x
  2. Step 2: Convert to fraction form
    18,967.80/28,464.40 = 7,874.50/x
  3. Step 3: Cross multiply
    18,967.80x = 28,464.40 × 7,874.50
  4. Step 4: Simplify right side
    18,967.80x = 224,142,826.95
  5. Step 5: Solve for x
    x = 224,142,826.95/18,967.80
  6. Step 6: Final answer
    x = 11,817.02

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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.