Home / 20,528.70-28,329.80-12,035.85

Finding the Fourth Proportional to 20,528.70, 28,329.80 and 12,035.85

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Solution

The fourth proportional to 20,528.70, 28,329.80 and 12,035.85 is: 16,609.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.70 : 28,329.80 = 12,035.85 : x
  2. Step 2: Convert to fraction form
    20,528.70/28,329.80 = 12,035.85/x
  3. Step 3: Cross multiply
    20,528.70x = 28,329.80 × 12,035.85
  4. Step 4: Simplify right side
    20,528.70x = 340,973,163.15
  5. Step 5: Solve for x
    x = 340,973,163.15/20,528.70
  6. Step 6: Final answer
    x = 16,609.58

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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.