Home / 20,528.37-28,329.17-12,028.80

Finding the Fourth Proportional to 20,528.37, 28,329.17 and 12,028.80

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Solution

The fourth proportional to 20,528.37, 28,329.17 and 12,028.80 is: 16,599.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.37 : 28,329.17 = 12,028.80 : x
  2. Step 2: Convert to fraction form
    20,528.37/28,329.17 = 12,028.80/x
  3. Step 3: Cross multiply
    20,528.37x = 28,329.17 × 12,028.80
  4. Step 4: Simplify right side
    20,528.37x = 340,765,819.20
  5. Step 5: Solve for x
    x = 340,765,819.20/20,528.37
  6. Step 6: Final answer
    x = 16,599.75

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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.