Home / 20,936.84-31,409.88-11,590.49

Finding the Fourth Proportional to 20,936.84, 31,409.88 and 11,590.49

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Solution

The fourth proportional to 20,936.84, 31,409.88 and 11,590.49 is: 17,388.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.84 : 31,409.88 = 11,590.49 : x
  2. Step 2: Convert to fraction form
    20,936.84/31,409.88 = 11,590.49/x
  3. Step 3: Cross multiply
    20,936.84x = 31,409.88 × 11,590.49
  4. Step 4: Simplify right side
    20,936.84x = 364,055,900.04
  5. Step 5: Solve for x
    x = 364,055,900.04/20,936.84
  6. Step 6: Final answer
    x = 17,388.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.