Home / 13,190.20-19,785.30-4,425.40

Finding the Fourth Proportional to 13,190.20, 19,785.30 and 4,425.40

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Solution

The fourth proportional to 13,190.20, 19,785.30 and 4,425.40 is: 6,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.20 : 19,785.30 = 4,425.40 : x
  2. Step 2: Convert to fraction form
    13,190.20/19,785.30 = 4,425.40/x
  3. Step 3: Cross multiply
    13,190.20x = 19,785.30 × 4,425.40
  4. Step 4: Simplify right side
    13,190.20x = 87,557,866.62
  5. Step 5: Solve for x
    x = 87,557,866.62/13,190.20
  6. Step 6: Final answer
    x = 6,638.10

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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.