Home / 12,790.80-19,189.58-4,470.80

Finding the Fourth Proportional to 12,790.80, 19,189.58 and 4,470.80

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Solution

The fourth proportional to 12,790.80, 19,189.58 and 4,470.80 is: 6,707.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.80 : 19,189.58 = 4,470.80 : x
  2. Step 2: Convert to fraction form
    12,790.80/19,189.58 = 4,470.80/x
  3. Step 3: Cross multiply
    12,790.80x = 19,189.58 × 4,470.80
  4. Step 4: Simplify right side
    12,790.80x = 85,792,655.96
  5. Step 5: Solve for x
    x = 85,792,655.96/12,790.80
  6. Step 6: Final answer
    x = 6,707.37

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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.