Home / 28,676.75-39,580.24-15,934.31

Finding the Fourth Proportional to 28,676.75, 39,580.24 and 15,934.31

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Solution

The fourth proportional to 28,676.75, 39,580.24 and 15,934.31 is: 21,992.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,676.75 : 39,580.24 = 15,934.31 : x
  2. Step 2: Convert to fraction form
    28,676.75/39,580.24 = 15,934.31/x
  3. Step 3: Cross multiply
    28,676.75x = 39,580.24 × 15,934.31
  4. Step 4: Simplify right side
    28,676.75x = 630,683,921.94
  5. Step 5: Solve for x
    x = 630,683,921.94/28,676.75
  6. Step 6: Final answer
    x = 21,992.87

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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.