Home / 11,123.30-15,355.71-6,406.67

Finding the Fourth Proportional to 11,123.30, 15,355.71 and 6,406.67

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Solution

The fourth proportional to 11,123.30, 15,355.71 and 6,406.67 is: 8,844.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123.30 : 15,355.71 = 6,406.67 : x
  2. Step 2: Convert to fraction form
    11,123.30/15,355.71 = 6,406.67/x
  3. Step 3: Cross multiply
    11,123.30x = 15,355.71 × 6,406.67
  4. Step 4: Simplify right side
    11,123.30x = 98,379,004.97
  5. Step 5: Solve for x
    x = 98,379,004.97/11,123.30
  6. Step 6: Final answer
    x = 8,844.41

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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.