Home / 39,980.75-55,173.51-22,075.79

Finding the Fourth Proportional to 39,980.75, 55,173.51 and 22,075.79

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Solution

The fourth proportional to 39,980.75, 55,173.51 and 22,075.79 is: 30,464.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,980.75 : 55,173.51 = 22,075.79 : x
  2. Step 2: Convert to fraction form
    39,980.75/55,173.51 = 22,075.79/x
  3. Step 3: Cross multiply
    39,980.75x = 55,173.51 × 22,075.79
  4. Step 4: Simplify right side
    39,980.75x = 1,217,998,544.46
  5. Step 5: Solve for x
    x = 1,217,998,544.46/39,980.75
  6. Step 6: Final answer
    x = 30,464.63

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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.