Home / 10,923.21-15,071.69-6,942.87

Finding the Fourth Proportional to 10,923.21, 15,071.69 and 6,942.87

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Solution

The fourth proportional to 10,923.21, 15,071.69 and 6,942.87 is: 9,579.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,923.21 : 15,071.69 = 6,942.87 : x
  2. Step 2: Convert to fraction form
    10,923.21/15,071.69 = 6,942.87/x
  3. Step 3: Cross multiply
    10,923.21x = 15,071.69 × 6,942.87
  4. Step 4: Simplify right side
    10,923.21x = 104,640,749.64
  5. Step 5: Solve for x
    x = 104,640,749.64/10,923.21
  6. Step 6: Final answer
    x = 9,579.67

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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.