Home / 12,390.55-18,584.03-4,070.90

Finding the Fourth Proportional to 12,390.55, 18,584.03 and 4,070.90

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Solution

The fourth proportional to 12,390.55, 18,584.03 and 4,070.90 is: 6,105.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.55 : 18,584.03 = 4,070.90 : x
  2. Step 2: Convert to fraction form
    12,390.55/18,584.03 = 4,070.90/x
  3. Step 3: Cross multiply
    12,390.55x = 18,584.03 × 4,070.90
  4. Step 4: Simplify right side
    12,390.55x = 75,653,653.70
  5. Step 5: Solve for x
    x = 75,653,653.70/12,390.55
  6. Step 6: Final answer
    x = 6,105.75

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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.