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Finding the Fourth Proportional to 12,503.94, 18,751.34 and 5,479.11

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Solution

The fourth proportional to 12,503.94, 18,751.34 and 5,479.11 is: 8,216.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.94 : 18,751.34 = 5,479.11 : x
  2. Step 2: Convert to fraction form
    12,503.94/18,751.34 = 5,479.11/x
  3. Step 3: Cross multiply
    12,503.94x = 18,751.34 × 5,479.11
  4. Step 4: Simplify right side
    12,503.94x = 102,740,668.21
  5. Step 5: Solve for x
    x = 102,740,668.21/12,503.94
  6. Step 6: Final answer
    x = 8,216.67

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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.