Home / 21,778.88-30,054.85-12,347.44

Finding the Fourth Proportional to 21,778.88, 30,054.85 and 12,347.44

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Solution

The fourth proportional to 21,778.88, 30,054.85 and 12,347.44 is: 17,039.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.88 : 30,054.85 = 12,347.44 : x
  2. Step 2: Convert to fraction form
    21,778.88/30,054.85 = 12,347.44/x
  3. Step 3: Cross multiply
    21,778.88x = 30,054.85 × 12,347.44
  4. Step 4: Simplify right side
    21,778.88x = 371,100,351.08
  5. Step 5: Solve for x
    x = 371,100,351.08/21,778.88
  6. Step 6: Final answer
    x = 17,039.46

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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.