Home / 20,524.62-28,322.55-12,139.50

Finding the Fourth Proportional to 20,524.62, 28,322.55 and 12,139.50

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Solution

The fourth proportional to 20,524.62, 28,322.55 and 12,139.50 is: 16,751.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,524.62 : 28,322.55 = 12,139.50 : x
  2. Step 2: Convert to fraction form
    20,524.62/28,322.55 = 12,139.50/x
  3. Step 3: Cross multiply
    20,524.62x = 28,322.55 × 12,139.50
  4. Step 4: Simplify right side
    20,524.62x = 343,821,595.73
  5. Step 5: Solve for x
    x = 343,821,595.73/20,524.62
  6. Step 6: Final answer
    x = 16,751.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.