Home / 19,987.56-27,635.43-19,671.81

Finding the Fourth Proportional to 19,987.56, 27,635.43 and 19,671.81

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Solution

The fourth proportional to 19,987.56, 27,635.43 and 19,671.81 is: 27,198.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.56 : 27,635.43 = 19,671.81 : x
  2. Step 2: Convert to fraction form
    19,987.56/27,635.43 = 19,671.81/x
  3. Step 3: Cross multiply
    19,987.56x = 27,635.43 × 19,671.81
  4. Step 4: Simplify right side
    19,987.56x = 543,638,943.16
  5. Step 5: Solve for x
    x = 543,638,943.16/19,987.56
  6. Step 6: Final answer
    x = 27,198.86

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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.