Home / 12,766.40-19,149.60-3,406.45

Finding the Fourth Proportional to 12,766.40, 19,149.60 and 3,406.45

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Solution

The fourth proportional to 12,766.40, 19,149.60 and 3,406.45 is: 5,109.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,766.40 : 19,149.60 = 3,406.45 : x
  2. Step 2: Convert to fraction form
    12,766.40/19,149.60 = 3,406.45/x
  3. Step 3: Cross multiply
    12,766.40x = 19,149.60 × 3,406.45
  4. Step 4: Simplify right side
    12,766.40x = 65,232,172.47
  5. Step 5: Solve for x
    x = 65,232,172.47/12,766.40
  6. Step 6: Final answer
    x = 5,109.68

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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.