Home / 13,649.80-20,467.40-4,879.94

Finding the Fourth Proportional to 13,649.80, 20,467.40 and 4,879.94

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Solution

The fourth proportional to 13,649.80, 20,467.40 and 4,879.94 is: 7,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.80 : 20,467.40 = 4,879.94 : x
  2. Step 2: Convert to fraction form
    13,649.80/20,467.40 = 4,879.94/x
  3. Step 3: Cross multiply
    13,649.80x = 20,467.40 × 4,879.94
  4. Step 4: Simplify right side
    13,649.80x = 99,879,683.96
  5. Step 5: Solve for x
    x = 99,879,683.96/13,649.80
  6. Step 6: Final answer
    x = 7,317.30

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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.