Home / 13,511.27-18,645.87-8,475.70

Finding the Fourth Proportional to 13,511.27, 18,645.87 and 8,475.70

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Solution

The fourth proportional to 13,511.27, 18,645.87 and 8,475.70 is: 11,696.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.27 : 18,645.87 = 8,475.70 : x
  2. Step 2: Convert to fraction form
    13,511.27/18,645.87 = 8,475.70/x
  3. Step 3: Cross multiply
    13,511.27x = 18,645.87 × 8,475.70
  4. Step 4: Simplify right side
    13,511.27x = 158,036,800.36
  5. Step 5: Solve for x
    x = 158,036,800.36/13,511.27
  6. Step 6: Final answer
    x = 11,696.67

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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.