Home / 20,018.84-27,628.75-11,520.79

Finding the Fourth Proportional to 20,018.84, 27,628.75 and 11,520.79

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Solution

The fourth proportional to 20,018.84, 27,628.75 and 11,520.79 is: 15,900.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.84 : 27,628.75 = 11,520.79 : x
  2. Step 2: Convert to fraction form
    20,018.84/27,628.75 = 11,520.79/x
  3. Step 3: Cross multiply
    20,018.84x = 27,628.75 × 11,520.79
  4. Step 4: Simplify right side
    20,018.84x = 318,304,928.84
  5. Step 5: Solve for x
    x = 318,304,928.84/20,018.84
  6. Step 6: Final answer
    x = 15,900.27

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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.