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Finding the Fourth Proportional to 38,676.99, 57,999.07 and 13,723.32

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Solution

The fourth proportional to 38,676.99, 57,999.07 and 13,723.32 is: 20,579.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,676.99 : 57,999.07 = 13,723.32 : x
  2. Step 2: Convert to fraction form
    38,676.99/57,999.07 = 13,723.32/x
  3. Step 3: Cross multiply
    38,676.99x = 57,999.07 × 13,723.32
  4. Step 4: Simplify right side
    38,676.99x = 795,939,797.31
  5. Step 5: Solve for x
    x = 795,939,797.31/38,676.99
  6. Step 6: Final answer
    x = 20,579.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.