Home / 12,775.79-19,163.78-4,455.78

Finding the Fourth Proportional to 12,775.79, 19,163.78 and 4,455.78

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Solution

The fourth proportional to 12,775.79, 19,163.78 and 4,455.78 is: 6,683.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.79 : 19,163.78 = 4,455.78 : x
  2. Step 2: Convert to fraction form
    12,775.79/19,163.78 = 4,455.78/x
  3. Step 3: Cross multiply
    12,775.79x = 19,163.78 × 4,455.78
  4. Step 4: Simplify right side
    12,775.79x = 85,389,587.65
  5. Step 5: Solve for x
    x = 85,389,587.65/12,775.79
  6. Step 6: Final answer
    x = 6,683.70

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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.