Home / 13,228.44-19,820.76-6,640.72

Finding the Fourth Proportional to 13,228.44, 19,820.76 and 6,640.72

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Solution

The fourth proportional to 13,228.44, 19,820.76 and 6,640.72 is: 9,950.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.44 : 19,820.76 = 6,640.72 : x
  2. Step 2: Convert to fraction form
    13,228.44/19,820.76 = 6,640.72/x
  3. Step 3: Cross multiply
    13,228.44x = 19,820.76 × 6,640.72
  4. Step 4: Simplify right side
    13,228.44x = 131,624,117.35
  5. Step 5: Solve for x
    x = 131,624,117.35/13,228.44
  6. Step 6: Final answer
    x = 9,950.09

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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.