Home / 19,818.75-27,351.09-11,435.25

Finding the Fourth Proportional to 19,818.75, 27,351.09 and 11,435.25

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Solution

The fourth proportional to 19,818.75, 27,351.09 and 11,435.25 is: 15,781.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,818.75 : 27,351.09 = 11,435.25 : x
  2. Step 2: Convert to fraction form
    19,818.75/27,351.09 = 11,435.25/x
  3. Step 3: Cross multiply
    19,818.75x = 27,351.09 × 11,435.25
  4. Step 4: Simplify right side
    19,818.75x = 312,766,551.92
  5. Step 5: Solve for x
    x = 312,766,551.92/19,818.75
  6. Step 6: Final answer
    x = 15,781.35

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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.