Home / 13,645.08-20,454.84-12,427.74

Finding the Fourth Proportional to 13,645.08, 20,454.84 and 12,427.74

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Solution

The fourth proportional to 13,645.08, 20,454.84 and 12,427.74 is: 18,629.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.08 : 20,454.84 = 12,427.74 : x
  2. Step 2: Convert to fraction form
    13,645.08/20,454.84 = 12,427.74/x
  3. Step 3: Cross multiply
    13,645.08x = 20,454.84 × 12,427.74
  4. Step 4: Simplify right side
    13,645.08x = 254,207,433.26
  5. Step 5: Solve for x
    x = 254,207,433.26/13,645.08
  6. Step 6: Final answer
    x = 18,629.97

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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.