Home / 13,408.31-20,112.69-4,643.49

Finding the Fourth Proportional to 13,408.31, 20,112.69 and 4,643.49

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Solution

The fourth proportional to 13,408.31, 20,112.69 and 4,643.49 is: 6,965.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.31 : 20,112.69 = 4,643.49 : x
  2. Step 2: Convert to fraction form
    13,408.31/20,112.69 = 4,643.49/x
  3. Step 3: Cross multiply
    13,408.31x = 20,112.69 × 4,643.49
  4. Step 4: Simplify right side
    13,408.31x = 93,393,074.89
  5. Step 5: Solve for x
    x = 93,393,074.89/13,408.31
  6. Step 6: Final answer
    x = 6,965.32

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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.