Home / 30,218.94-41,688.75-20,137.56

Finding the Fourth Proportional to 30,218.94, 41,688.75 and 20,137.56

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Solution

The fourth proportional to 30,218.94, 41,688.75 and 20,137.56 is: 27,780.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,218.94 : 41,688.75 = 20,137.56 : x
  2. Step 2: Convert to fraction form
    30,218.94/41,688.75 = 20,137.56/x
  3. Step 3: Cross multiply
    30,218.94x = 41,688.75 × 20,137.56
  4. Step 4: Simplify right side
    30,218.94x = 839,509,704.45
  5. Step 5: Solve for x
    x = 839,509,704.45/30,218.94
  6. Step 6: Final answer
    x = 27,780.91

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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.