Home / 12,107.88-18,157.08-4,711.36

Finding the Fourth Proportional to 12,107.88, 18,157.08 and 4,711.36

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Solution

The fourth proportional to 12,107.88, 18,157.08 and 4,711.36 is: 7,065.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.88 : 18,157.08 = 4,711.36 : x
  2. Step 2: Convert to fraction form
    12,107.88/18,157.08 = 4,711.36/x
  3. Step 3: Cross multiply
    12,107.88x = 18,157.08 × 4,711.36
  4. Step 4: Simplify right side
    12,107.88x = 85,544,540.43
  5. Step 5: Solve for x
    x = 85,544,540.43/12,107.88
  6. Step 6: Final answer
    x = 7,065.20

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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.