Home / 28,676.23-39,571.91-15,930.30

Finding the Fourth Proportional to 28,676.23, 39,571.91 and 15,930.30

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Solution

The fourth proportional to 28,676.23, 39,571.91 and 15,930.30 is: 21,983.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,676.23 : 39,571.91 = 15,930.30 : x
  2. Step 2: Convert to fraction form
    28,676.23/39,571.91 = 15,930.30/x
  3. Step 3: Cross multiply
    28,676.23x = 39,571.91 × 15,930.30
  4. Step 4: Simplify right side
    28,676.23x = 630,392,526.35
  5. Step 5: Solve for x
    x = 630,392,526.35/28,676.23
  6. Step 6: Final answer
    x = 21,983.11

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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.