Home / 13,579.12-20,364.67-4,091.05

Finding the Fourth Proportional to 13,579.12, 20,364.67 and 4,091.05

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Solution

The fourth proportional to 13,579.12, 20,364.67 and 4,091.05 is: 6,135.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.12 : 20,364.67 = 4,091.05 : x
  2. Step 2: Convert to fraction form
    13,579.12/20,364.67 = 4,091.05/x
  3. Step 3: Cross multiply
    13,579.12x = 20,364.67 × 4,091.05
  4. Step 4: Simplify right side
    13,579.12x = 83,312,883.20
  5. Step 5: Solve for x
    x = 83,312,883.20/13,579.12
  6. Step 6: Final answer
    x = 6,135.37

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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.