Home / 13,113.56-19,670.34-3,879.56

Finding the Fourth Proportional to 13,113.56, 19,670.34 and 3,879.56

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Solution

The fourth proportional to 13,113.56, 19,670.34 and 3,879.56 is: 5,819.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.56 : 19,670.34 = 3,879.56 : x
  2. Step 2: Convert to fraction form
    13,113.56/19,670.34 = 3,879.56/x
  3. Step 3: Cross multiply
    13,113.56x = 19,670.34 × 3,879.56
  4. Step 4: Simplify right side
    13,113.56x = 76,312,264.25
  5. Step 5: Solve for x
    x = 76,312,264.25/13,113.56
  6. Step 6: Final answer
    x = 5,819.34

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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.