Home / 10,383.40-15,579.30-4,231.72

Finding the Fourth Proportional to 10,383.40, 15,579.30 and 4,231.72

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Solution

The fourth proportional to 10,383.40, 15,579.30 and 4,231.72 is: 6,349.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,383.40 : 15,579.30 = 4,231.72 : x
  2. Step 2: Convert to fraction form
    10,383.40/15,579.30 = 4,231.72/x
  3. Step 3: Cross multiply
    10,383.40x = 15,579.30 × 4,231.72
  4. Step 4: Simplify right side
    10,383.40x = 65,927,235.40
  5. Step 5: Solve for x
    x = 65,927,235.40/10,383.40
  6. Step 6: Final answer
    x = 6,349.29

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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.