Home / 30,087.45-41,529.51-21,137.36

Finding the Fourth Proportional to 30,087.45, 41,529.51 and 21,137.36

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Solution

The fourth proportional to 30,087.45, 41,529.51 and 21,137.36 is: 29,175.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,087.45 : 41,529.51 = 21,137.36 : x
  2. Step 2: Convert to fraction form
    30,087.45/41,529.51 = 21,137.36/x
  3. Step 3: Cross multiply
    30,087.45x = 41,529.51 × 21,137.36
  4. Step 4: Simplify right side
    30,087.45x = 877,823,995.85
  5. Step 5: Solve for x
    x = 877,823,995.85/30,087.45
  6. Step 6: Final answer
    x = 29,175.75

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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.