Home / 14,138.65-21,199.27-4,777.78

Finding the Fourth Proportional to 14,138.65, 21,199.27 and 4,777.78

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Solution

The fourth proportional to 14,138.65, 21,199.27 and 4,777.78 is: 7,163.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.65 : 21,199.27 = 4,777.78 : x
  2. Step 2: Convert to fraction form
    14,138.65/21,199.27 = 4,777.78/x
  3. Step 3: Cross multiply
    14,138.65x = 21,199.27 × 4,777.78
  4. Step 4: Simplify right side
    14,138.65x = 101,285,448.22
  5. Step 5: Solve for x
    x = 101,285,448.22/14,138.65
  6. Step 6: Final answer
    x = 7,163.73

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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.