Home / 19,214.70-28,825.02-8,120.40

Finding the Fourth Proportional to 19,214.70, 28,825.02 and 8,120.40

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Solution

The fourth proportional to 19,214.70, 28,825.02 and 8,120.40 is: 12,181.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,214.70 : 28,825.02 = 8,120.40 : x
  2. Step 2: Convert to fraction form
    19,214.70/28,825.02 = 8,120.40/x
  3. Step 3: Cross multiply
    19,214.70x = 28,825.02 × 8,120.40
  4. Step 4: Simplify right side
    19,214.70x = 234,070,692.41
  5. Step 5: Solve for x
    x = 234,070,692.41/19,214.70
  6. Step 6: Final answer
    x = 12,181.86

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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.