Home / 12,807.20-19,211.10-4,496.78

Finding the Fourth Proportional to 12,807.20, 19,211.10 and 4,496.78

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Solution

The fourth proportional to 12,807.20, 19,211.10 and 4,496.78 is: 6,745.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.20 : 19,211.10 = 4,496.78 : x
  2. Step 2: Convert to fraction form
    12,807.20/19,211.10 = 4,496.78/x
  3. Step 3: Cross multiply
    12,807.20x = 19,211.10 × 4,496.78
  4. Step 4: Simplify right side
    12,807.20x = 86,388,090.26
  5. Step 5: Solve for x
    x = 86,388,090.26/12,807.20
  6. Step 6: Final answer
    x = 6,745.28

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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.