Home / 20,576.14-28,395.05-11,144.70

Finding the Fourth Proportional to 20,576.14, 28,395.05 and 11,144.70

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Solution

The fourth proportional to 20,576.14, 28,395.05 and 11,144.70 is: 15,379.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,576.14 : 28,395.05 = 11,144.70 : x
  2. Step 2: Convert to fraction form
    20,576.14/28,395.05 = 11,144.70/x
  3. Step 3: Cross multiply
    20,576.14x = 28,395.05 × 11,144.70
  4. Step 4: Simplify right side
    20,576.14x = 316,454,258.01
  5. Step 5: Solve for x
    x = 316,454,258.01/20,576.14
  6. Step 6: Final answer
    x = 15,379.67

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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.