Home / 13,785.31-20,676.52-4,432.03

Finding the Fourth Proportional to 13,785.31, 20,676.52 and 4,432.03

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Solution

The fourth proportional to 13,785.31, 20,676.52 and 4,432.03 is: 6,647.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.31 : 20,676.52 = 4,432.03 : x
  2. Step 2: Convert to fraction form
    13,785.31/20,676.52 = 4,432.03/x
  3. Step 3: Cross multiply
    13,785.31x = 20,676.52 × 4,432.03
  4. Step 4: Simplify right side
    13,785.31x = 91,638,956.94
  5. Step 5: Solve for x
    x = 91,638,956.94/13,785.31
  6. Step 6: Final answer
    x = 6,647.58

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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.