Home / 13,378.63-20,066.34-3,518.67

Finding the Fourth Proportional to 13,378.63, 20,066.34 and 3,518.67

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Solution

The fourth proportional to 13,378.63, 20,066.34 and 3,518.67 is: 5,277.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,378.63 : 20,066.34 = 3,518.67 : x
  2. Step 2: Convert to fraction form
    13,378.63/20,066.34 = 3,518.67/x
  3. Step 3: Cross multiply
    13,378.63x = 20,066.34 × 3,518.67
  4. Step 4: Simplify right side
    13,378.63x = 70,606,810.97
  5. Step 5: Solve for x
    x = 70,606,810.97/13,378.63
  6. Step 6: Final answer
    x = 5,277.58

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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.