Home / 19,905.40-29,847.30-8,219.80

Finding the Fourth Proportional to 19,905.40, 29,847.30 and 8,219.80

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Solution

The fourth proportional to 19,905.40, 29,847.30 and 8,219.80 is: 12,325.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.40 : 29,847.30 = 8,219.80 : x
  2. Step 2: Convert to fraction form
    19,905.40/29,847.30 = 8,219.80/x
  3. Step 3: Cross multiply
    19,905.40x = 29,847.30 × 8,219.80
  4. Step 4: Simplify right side
    19,905.40x = 245,338,836.54
  5. Step 5: Solve for x
    x = 245,338,836.54/19,905.40
  6. Step 6: Final answer
    x = 12,325.24

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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.