Home / 19,987.03-27,568.78-12,020.88

Finding the Fourth Proportional to 19,987.03, 27,568.78 and 12,020.88

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Solution

The fourth proportional to 19,987.03, 27,568.78 and 12,020.88 is: 16,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.03 : 27,568.78 = 12,020.88 : x
  2. Step 2: Convert to fraction form
    19,987.03/27,568.78 = 12,020.88/x
  3. Step 3: Cross multiply
    19,987.03x = 27,568.78 × 12,020.88
  4. Step 4: Simplify right side
    19,987.03x = 331,400,996.13
  5. Step 5: Solve for x
    x = 331,400,996.13/19,987.03
  6. Step 6: Final answer
    x = 16,580.80

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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.