Home / 19,845.84-27,372.82-13,137.22

Finding the Fourth Proportional to 19,845.84, 27,372.82 and 13,137.22

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Solution

The fourth proportional to 19,845.84, 27,372.82 and 13,137.22 is: 18,119.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,845.84 : 27,372.82 = 13,137.22 : x
  2. Step 2: Convert to fraction form
    19,845.84/27,372.82 = 13,137.22/x
  3. Step 3: Cross multiply
    19,845.84x = 27,372.82 × 13,137.22
  4. Step 4: Simplify right side
    19,845.84x = 359,602,758.36
  5. Step 5: Solve for x
    x = 359,602,758.36/19,845.84
  6. Step 6: Final answer
    x = 18,119.81

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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.