Home / 20,364.82-28,102.03-11,290.07

Finding the Fourth Proportional to 20,364.82, 28,102.03 and 11,290.07

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Solution

The fourth proportional to 20,364.82, 28,102.03 and 11,290.07 is: 15,579.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.82 : 28,102.03 = 11,290.07 : x
  2. Step 2: Convert to fraction form
    20,364.82/28,102.03 = 11,290.07/x
  3. Step 3: Cross multiply
    20,364.82x = 28,102.03 × 11,290.07
  4. Step 4: Simplify right side
    20,364.82x = 317,273,927.87
  5. Step 5: Solve for x
    x = 317,273,927.87/20,364.82
  6. Step 6: Final answer
    x = 15,579.51

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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.