Home / 12,315.03-18,467.87-4,415.42

Finding the Fourth Proportional to 12,315.03, 18,467.87 and 4,415.42

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Solution

The fourth proportional to 12,315.03, 18,467.87 and 4,415.42 is: 6,621.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.03 : 18,467.87 = 4,415.42 : x
  2. Step 2: Convert to fraction form
    12,315.03/18,467.87 = 4,415.42/x
  3. Step 3: Cross multiply
    12,315.03x = 18,467.87 × 4,415.42
  4. Step 4: Simplify right side
    12,315.03x = 81,543,288.14
  5. Step 5: Solve for x
    x = 81,543,288.14/12,315.03
  6. Step 6: Final answer
    x = 6,621.44

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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.