Home / 13,886.19-20,830.62-3,890.94

Finding the Fourth Proportional to 13,886.19, 20,830.62 and 3,890.94

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Solution

The fourth proportional to 13,886.19, 20,830.62 and 3,890.94 is: 5,836.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,886.19 : 20,830.62 = 3,890.94 : x
  2. Step 2: Convert to fraction form
    13,886.19/20,830.62 = 3,890.94/x
  3. Step 3: Cross multiply
    13,886.19x = 20,830.62 × 3,890.94
  4. Step 4: Simplify right side
    13,886.19x = 81,050,692.58
  5. Step 5: Solve for x
    x = 81,050,692.58/13,886.19
  6. Step 6: Final answer
    x = 5,836.78

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1.5x scale

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.