Home / 12,195.90-18,280.62-4,295.34

Finding the Fourth Proportional to 12,195.90, 18,280.62 and 4,295.34

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Solution

The fourth proportional to 12,195.90, 18,280.62 and 4,295.34 is: 6,438.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.90 : 18,280.62 = 4,295.34 : x
  2. Step 2: Convert to fraction form
    12,195.90/18,280.62 = 4,295.34/x
  3. Step 3: Cross multiply
    12,195.90x = 18,280.62 × 4,295.34
  4. Step 4: Simplify right side
    12,195.90x = 78,521,478.31
  5. Step 5: Solve for x
    x = 78,521,478.31/12,195.90
  6. Step 6: Final answer
    x = 6,438.35

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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.