Home / 20,122.68-27,769.41-12,573.39

Finding the Fourth Proportional to 20,122.68, 27,769.41 and 12,573.39

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Solution

The fourth proportional to 20,122.68, 27,769.41 and 12,573.39 is: 17,351.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.68 : 27,769.41 = 12,573.39 : x
  2. Step 2: Convert to fraction form
    20,122.68/27,769.41 = 12,573.39/x
  3. Step 3: Cross multiply
    20,122.68x = 27,769.41 × 12,573.39
  4. Step 4: Simplify right side
    20,122.68x = 349,155,622.00
  5. Step 5: Solve for x
    x = 349,155,622.00/20,122.68
  6. Step 6: Final answer
    x = 17,351.35

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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.