Home / 19,589.21-27,015.68-15,811.17

Finding the Fourth Proportional to 19,589.21, 27,015.68 and 15,811.17

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Solution

The fourth proportional to 19,589.21, 27,015.68 and 15,811.17 is: 21,805.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,589.21 : 27,015.68 = 15,811.17 : x
  2. Step 2: Convert to fraction form
    19,589.21/27,015.68 = 15,811.17/x
  3. Step 3: Cross multiply
    19,589.21x = 27,015.68 × 15,811.17
  4. Step 4: Simplify right side
    19,589.21x = 427,149,430.09
  5. Step 5: Solve for x
    x = 427,149,430.09/19,589.21
  6. Step 6: Final answer
    x = 21,805.35

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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.