Home / 20,712.06-28,584.63-12,758.94

Finding the Fourth Proportional to 20,712.06, 28,584.63 and 12,758.94

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Solution

The fourth proportional to 20,712.06, 28,584.63 and 12,758.94 is: 17,608.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.06 : 28,584.63 = 12,758.94 : x
  2. Step 2: Convert to fraction form
    20,712.06/28,584.63 = 12,758.94/x
  3. Step 3: Cross multiply
    20,712.06x = 28,584.63 × 12,758.94
  4. Step 4: Simplify right side
    20,712.06x = 364,709,579.09
  5. Step 5: Solve for x
    x = 364,709,579.09/20,712.06
  6. Step 6: Final answer
    x = 17,608.56

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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.