Home / 12,069.93-18,107.63-4,278.75

Finding the Fourth Proportional to 12,069.93, 18,107.63 and 4,278.75

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Solution

The fourth proportional to 12,069.93, 18,107.63 and 4,278.75 is: 6,419.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,069.93 : 18,107.63 = 4,278.75 : x
  2. Step 2: Convert to fraction form
    12,069.93/18,107.63 = 4,278.75/x
  3. Step 3: Cross multiply
    12,069.93x = 18,107.63 × 4,278.75
  4. Step 4: Simplify right side
    12,069.93x = 77,478,021.86
  5. Step 5: Solve for x
    x = 77,478,021.86/12,069.93
  6. Step 6: Final answer
    x = 6,419.09

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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.