Home / 36,290.88-54,431.36-9,991.84

Finding the Fourth Proportional to 36,290.88, 54,431.36 and 9,991.84

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Solution

The fourth proportional to 36,290.88, 54,431.36 and 9,991.84 is: 14,986.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,290.88 : 54,431.36 = 9,991.84 : x
  2. Step 2: Convert to fraction form
    36,290.88/54,431.36 = 9,991.84/x
  3. Step 3: Cross multiply
    36,290.88x = 54,431.36 × 9,991.84
  4. Step 4: Simplify right side
    36,290.88x = 543,869,440.10
  5. Step 5: Solve for x
    x = 543,869,440.10/36,290.88
  6. Step 6: Final answer
    x = 14,986.39

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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.