Home / 13,563.45-18,720.86-8,262.74

Finding the Fourth Proportional to 13,563.45, 18,720.86 and 8,262.74

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Solution

The fourth proportional to 13,563.45, 18,720.86 and 8,262.74 is: 11,404.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.45 : 18,720.86 = 8,262.74 : x
  2. Step 2: Convert to fraction form
    13,563.45/18,720.86 = 8,262.74/x
  3. Step 3: Cross multiply
    13,563.45x = 18,720.86 × 8,262.74
  4. Step 4: Simplify right side
    13,563.45x = 154,685,604.24
  5. Step 5: Solve for x
    x = 154,685,604.24/13,563.45
  6. Step 6: Final answer
    x = 11,404.59

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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.