Home / 13,179.24-18,192.60-8,643.65

Finding the Fourth Proportional to 13,179.24, 18,192.60 and 8,643.65

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Solution

The fourth proportional to 13,179.24, 18,192.60 and 8,643.65 is: 11,931.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.24 : 18,192.60 = 8,643.65 : x
  2. Step 2: Convert to fraction form
    13,179.24/18,192.60 = 8,643.65/x
  3. Step 3: Cross multiply
    13,179.24x = 18,192.60 × 8,643.65
  4. Step 4: Simplify right side
    13,179.24x = 157,250,376.03
  5. Step 5: Solve for x
    x = 157,250,376.03/13,179.24
  6. Step 6: Final answer
    x = 11,931.67

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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.