Home / 19,768.36-27,287.28-12,220.48

Finding the Fourth Proportional to 19,768.36, 27,287.28 and 12,220.48

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Solution

The fourth proportional to 19,768.36, 27,287.28 and 12,220.48 is: 16,868.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,768.36 : 27,287.28 = 12,220.48 : x
  2. Step 2: Convert to fraction form
    19,768.36/27,287.28 = 12,220.48/x
  3. Step 3: Cross multiply
    19,768.36x = 27,287.28 × 12,220.48
  4. Step 4: Simplify right side
    19,768.36x = 333,463,659.49
  5. Step 5: Solve for x
    x = 333,463,659.49/19,768.36
  6. Step 6: Final answer
    x = 16,868.55

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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.