Home / 20,443.88-28,205.52-13,282.76

Finding the Fourth Proportional to 20,443.88, 28,205.52 and 13,282.76

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Solution

The fourth proportional to 20,443.88, 28,205.52 and 13,282.76 is: 18,325.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.88 : 28,205.52 = 13,282.76 : x
  2. Step 2: Convert to fraction form
    20,443.88/28,205.52 = 13,282.76/x
  3. Step 3: Cross multiply
    20,443.88x = 28,205.52 × 13,282.76
  4. Step 4: Simplify right side
    20,443.88x = 374,647,152.84
  5. Step 5: Solve for x
    x = 374,647,152.84/20,443.88
  6. Step 6: Final answer
    x = 18,325.64

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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.