Home / 10,865.34-16,286.36-7,115.67

Finding the Fourth Proportional to 10,865.34, 16,286.36 and 7,115.67

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Solution

The fourth proportional to 10,865.34, 16,286.36 and 7,115.67 is: 10,665.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,865.34 : 16,286.36 = 7,115.67 : x
  2. Step 2: Convert to fraction form
    10,865.34/16,286.36 = 7,115.67/x
  3. Step 3: Cross multiply
    10,865.34x = 16,286.36 × 7,115.67
  4. Step 4: Simplify right side
    10,865.34x = 115,888,327.68
  5. Step 5: Solve for x
    x = 115,888,327.68/10,865.34
  6. Step 6: Final answer
    x = 10,665.87

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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.