Home / 28,749.78-39,674.25-16,174.56

Finding the Fourth Proportional to 28,749.78, 39,674.25 and 16,174.56

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Solution

The fourth proportional to 28,749.78, 39,674.25 and 16,174.56 is: 22,320.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,749.78 : 39,674.25 = 16,174.56 : x
  2. Step 2: Convert to fraction form
    28,749.78/39,674.25 = 16,174.56/x
  3. Step 3: Cross multiply
    28,749.78x = 39,674.25 × 16,174.56
  4. Step 4: Simplify right side
    28,749.78x = 641,713,537.08
  5. Step 5: Solve for x
    x = 641,713,537.08/28,749.78
  6. Step 6: Final answer
    x = 22,320.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.