Home / 37,131.45-51,240.78-20,998.50

Finding the Fourth Proportional to 37,131.45, 51,240.78 and 20,998.50

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Solution

The fourth proportional to 37,131.45, 51,240.78 and 20,998.50 is: 28,977.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,131.45 : 51,240.78 = 20,998.50 : x
  2. Step 2: Convert to fraction form
    37,131.45/51,240.78 = 20,998.50/x
  3. Step 3: Cross multiply
    37,131.45x = 51,240.78 × 20,998.50
  4. Step 4: Simplify right side
    37,131.45x = 1,075,979,518.83
  5. Step 5: Solve for x
    x = 1,075,979,518.83/37,131.45
  6. Step 6: Final answer
    x = 28,977.58

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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.