Home / 25,112.85-34,655.79-13,782.43

Finding the Fourth Proportional to 25,112.85, 34,655.79 and 13,782.43

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Solution

The fourth proportional to 25,112.85, 34,655.79 and 13,782.43 is: 19,019.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,112.85 : 34,655.79 = 13,782.43 : x
  2. Step 2: Convert to fraction form
    25,112.85/34,655.79 = 13,782.43/x
  3. Step 3: Cross multiply
    25,112.85x = 34,655.79 × 13,782.43
  4. Step 4: Simplify right side
    25,112.85x = 477,640,999.77
  5. Step 5: Solve for x
    x = 477,640,999.77/25,112.85
  6. Step 6: Final answer
    x = 19,019.78

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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.