Home / 12,790.57-19,185.90-4,470.55

Finding the Fourth Proportional to 12,790.57, 19,185.90 and 4,470.55

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Solution

The fourth proportional to 12,790.57, 19,185.90 and 4,470.55 is: 6,705.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.57 : 19,185.90 = 4,470.55 : x
  2. Step 2: Convert to fraction form
    12,790.57/19,185.90 = 4,470.55/x
  3. Step 3: Cross multiply
    12,790.57x = 19,185.90 × 4,470.55
  4. Step 4: Simplify right side
    12,790.57x = 85,771,525.25
  5. Step 5: Solve for x
    x = 85,771,525.25/12,790.57
  6. Step 6: Final answer
    x = 6,705.84

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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.