Home / 12,760.40-19,140.48-4,440.39

Finding the Fourth Proportional to 12,760.40, 19,140.48 and 4,440.39

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Solution

The fourth proportional to 12,760.40, 19,140.48 and 4,440.39 is: 6,660.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,760.40 : 19,140.48 = 4,440.39 : x
  2. Step 2: Convert to fraction form
    12,760.40/19,140.48 = 4,440.39/x
  3. Step 3: Cross multiply
    12,760.40x = 19,140.48 × 4,440.39
  4. Step 4: Simplify right side
    12,760.40x = 84,991,195.99
  5. Step 5: Solve for x
    x = 84,991,195.99/12,760.40
  6. Step 6: Final answer
    x = 6,660.55

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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.