Home / 11,105.09-15,324.14-6,389.67

Finding the Fourth Proportional to 11,105.09, 15,324.14 and 6,389.67

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Solution

The fourth proportional to 11,105.09, 15,324.14 and 6,389.67 is: 8,817.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.09 : 15,324.14 = 6,389.67 : x
  2. Step 2: Convert to fraction form
    11,105.09/15,324.14 = 6,389.67/x
  3. Step 3: Cross multiply
    11,105.09x = 15,324.14 × 6,389.67
  4. Step 4: Simplify right side
    11,105.09x = 97,916,165.69
  5. Step 5: Solve for x
    x = 97,916,165.69/11,105.09
  6. Step 6: Final answer
    x = 8,817.24

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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.