Home / 28,768.96-39,700.76-16,021.79

Finding the Fourth Proportional to 28,768.96, 39,700.76 and 16,021.79

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Solution

The fourth proportional to 28,768.96, 39,700.76 and 16,021.79 is: 22,109.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,768.96 : 39,700.76 = 16,021.79 : x
  2. Step 2: Convert to fraction form
    28,768.96/39,700.76 = 16,021.79/x
  3. Step 3: Cross multiply
    28,768.96x = 39,700.76 × 16,021.79
  4. Step 4: Simplify right side
    28,768.96x = 636,077,239.56
  5. Step 5: Solve for x
    x = 636,077,239.56/28,768.96
  6. Step 6: Final answer
    x = 22,109.84

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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.