Home / 12,907.24-19,361.10-4,142.20

Finding the Fourth Proportional to 12,907.24, 19,361.10 and 4,142.20

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Solution

The fourth proportional to 12,907.24, 19,361.10 and 4,142.20 is: 6,213.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.24 : 19,361.10 = 4,142.20 : x
  2. Step 2: Convert to fraction form
    12,907.24/19,361.10 = 4,142.20/x
  3. Step 3: Cross multiply
    12,907.24x = 19,361.10 × 4,142.20
  4. Step 4: Simplify right side
    12,907.24x = 80,197,548.42
  5. Step 5: Solve for x
    x = 80,197,548.42/12,907.24
  6. Step 6: Final answer
    x = 6,213.38

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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.