Home / 20,946.12-28,889.26-12,983.84

Finding the Fourth Proportional to 20,946.12, 28,889.26 and 12,983.84

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Solution

The fourth proportional to 20,946.12, 28,889.26 and 12,983.84 is: 17,907.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.12 : 28,889.26 = 12,983.84 : x
  2. Step 2: Convert to fraction form
    20,946.12/28,889.26 = 12,983.84/x
  3. Step 3: Cross multiply
    20,946.12x = 28,889.26 × 12,983.84
  4. Step 4: Simplify right side
    20,946.12x = 375,093,529.56
  5. Step 5: Solve for x
    x = 375,093,529.56/20,946.12
  6. Step 6: Final answer
    x = 17,907.54

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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.