Home / 13,412.94-20,112.93-5,619.66

Finding the Fourth Proportional to 13,412.94, 20,112.93 and 5,619.66

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Solution

The fourth proportional to 13,412.94, 20,112.93 and 5,619.66 is: 8,426.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.94 : 20,112.93 = 5,619.66 : x
  2. Step 2: Convert to fraction form
    13,412.94/20,112.93 = 5,619.66/x
  3. Step 3: Cross multiply
    13,412.94x = 20,112.93 × 5,619.66
  4. Step 4: Simplify right side
    13,412.94x = 113,027,828.20
  5. Step 5: Solve for x
    x = 113,027,828.20/13,412.94
  6. Step 6: Final answer
    x = 8,426.78

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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.