Home / 12,807.90-19,215.09-4,042.80

Finding the Fourth Proportional to 12,807.90, 19,215.09 and 4,042.80

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Solution

The fourth proportional to 12,807.90, 19,215.09 and 4,042.80 is: 6,065.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.90 : 19,215.09 = 4,042.80 : x
  2. Step 2: Convert to fraction form
    12,807.90/19,215.09 = 4,042.80/x
  3. Step 3: Cross multiply
    12,807.90x = 19,215.09 × 4,042.80
  4. Step 4: Simplify right side
    12,807.90x = 77,682,765.85
  5. Step 5: Solve for x
    x = 77,682,765.85/12,807.90
  6. Step 6: Final answer
    x = 6,065.22

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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.