Home / 13,676.75-20,488.33-12,189.08

Finding the Fourth Proportional to 13,676.75, 20,488.33 and 12,189.08

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Solution

The fourth proportional to 13,676.75, 20,488.33 and 12,189.08 is: 18,259.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,676.75 : 20,488.33 = 12,189.08 : x
  2. Step 2: Convert to fraction form
    13,676.75/20,488.33 = 12,189.08/x
  3. Step 3: Cross multiply
    13,676.75x = 20,488.33 × 12,189.08
  4. Step 4: Simplify right side
    13,676.75x = 249,733,790.99
  5. Step 5: Solve for x
    x = 249,733,790.99/13,676.75
  6. Step 6: Final answer
    x = 18,259.74

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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.