Home / 19,945.90-27,506.16-13,127.74

Finding the Fourth Proportional to 19,945.90, 27,506.16 and 13,127.74

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Solution

The fourth proportional to 19,945.90, 27,506.16 and 13,127.74 is: 18,103.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,945.90 : 27,506.16 = 13,127.74 : x
  2. Step 2: Convert to fraction form
    19,945.90/27,506.16 = 13,127.74/x
  3. Step 3: Cross multiply
    19,945.90x = 27,506.16 × 13,127.74
  4. Step 4: Simplify right side
    19,945.90x = 361,093,716.88
  5. Step 5: Solve for x
    x = 361,093,716.88/19,945.90
  6. Step 6: Final answer
    x = 18,103.66

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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.