Home / 12,529.50-18,788.65-3,765.09

Finding the Fourth Proportional to 12,529.50, 18,788.65 and 3,765.09

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Solution

The fourth proportional to 12,529.50, 18,788.65 and 3,765.09 is: 5,645.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,529.50 : 18,788.65 = 3,765.09 : x
  2. Step 2: Convert to fraction form
    12,529.50/18,788.65 = 3,765.09/x
  3. Step 3: Cross multiply
    12,529.50x = 18,788.65 × 3,765.09
  4. Step 4: Simplify right side
    12,529.50x = 70,740,958.23
  5. Step 5: Solve for x
    x = 70,740,958.23/12,529.50
  6. Step 6: Final answer
    x = 5,645.95

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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.