Home / 28,747.24-39,658.08-20,776.84

Finding the Fourth Proportional to 28,747.24, 39,658.08 and 20,776.84

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Solution

The fourth proportional to 28,747.24, 39,658.08 and 20,776.84 is: 28,662.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,747.24 : 39,658.08 = 20,776.84 : x
  2. Step 2: Convert to fraction form
    28,747.24/39,658.08 = 20,776.84/x
  3. Step 3: Cross multiply
    28,747.24x = 39,658.08 × 20,776.84
  4. Step 4: Simplify right side
    28,747.24x = 823,969,582.87
  5. Step 5: Solve for x
    x = 823,969,582.87/28,747.24
  6. Step 6: Final answer
    x = 28,662.56

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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.