Home / 13,563.12-20,339.92-6,446.50

Finding the Fourth Proportional to 13,563.12, 20,339.92 and 6,446.50

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Solution

The fourth proportional to 13,563.12, 20,339.92 and 6,446.50 is: 9,667.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.12 : 20,339.92 = 6,446.50 : x
  2. Step 2: Convert to fraction form
    13,563.12/20,339.92 = 6,446.50/x
  3. Step 3: Cross multiply
    13,563.12x = 20,339.92 × 6,446.50
  4. Step 4: Simplify right side
    13,563.12x = 131,121,294.28
  5. Step 5: Solve for x
    x = 131,121,294.28/13,563.12
  6. Step 6: Final answer
    x = 9,667.49

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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.