Home / 39,979.58-55,172.67-22,075.70

Finding the Fourth Proportional to 39,979.58, 55,172.67 and 22,075.70

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Solution

The fourth proportional to 39,979.58, 55,172.67 and 22,075.70 is: 30,464.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.58 : 55,172.67 = 22,075.70 : x
  2. Step 2: Convert to fraction form
    39,979.58/55,172.67 = 22,075.70/x
  3. Step 3: Cross multiply
    39,979.58x = 55,172.67 × 22,075.70
  4. Step 4: Simplify right side
    39,979.58x = 1,217,975,449.05
  5. Step 5: Solve for x
    x = 1,217,975,449.05/39,979.58
  6. Step 6: Final answer
    x = 30,464.94

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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.