Home / 28,561.37-42,850.81-12,779.68

Finding the Fourth Proportional to 28,561.37, 42,850.81 and 12,779.68

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Solution

The fourth proportional to 28,561.37, 42,850.81 and 12,779.68 is: 19,173.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,561.37 : 42,850.81 = 12,779.68 : x
  2. Step 2: Convert to fraction form
    28,561.37/42,850.81 = 12,779.68/x
  3. Step 3: Cross multiply
    28,561.37x = 42,850.81 × 12,779.68
  4. Step 4: Simplify right side
    28,561.37x = 547,619,556.85
  5. Step 5: Solve for x
    x = 547,619,556.85/28,561.37
  6. Step 6: Final answer
    x = 19,173.44

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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.