Home / 20,286.84-28,006.69-13,583.89

Finding the Fourth Proportional to 20,286.84, 28,006.69 and 13,583.89

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Solution

The fourth proportional to 20,286.84, 28,006.69 and 13,583.89 is: 18,753.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.84 : 28,006.69 = 13,583.89 : x
  2. Step 2: Convert to fraction form
    20,286.84/28,006.69 = 13,583.89/x
  3. Step 3: Cross multiply
    20,286.84x = 28,006.69 × 13,583.89
  4. Step 4: Simplify right side
    20,286.84x = 380,439,796.22
  5. Step 5: Solve for x
    x = 380,439,796.22/20,286.84
  6. Step 6: Final answer
    x = 18,753.03

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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.