Home / 13,154.64-18,147.49-8,119.07

Finding the Fourth Proportional to 13,154.64, 18,147.49 and 8,119.07

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Solution

The fourth proportional to 13,154.64, 18,147.49 and 8,119.07 is: 11,200.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.64 : 18,147.49 = 8,119.07 : x
  2. Step 2: Convert to fraction form
    13,154.64/18,147.49 = 8,119.07/x
  3. Step 3: Cross multiply
    13,154.64x = 18,147.49 × 8,119.07
  4. Step 4: Simplify right side
    13,154.64x = 147,340,744.32
  5. Step 5: Solve for x
    x = 147,340,744.32/13,154.64
  6. Step 6: Final answer
    x = 11,200.67

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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.