Home / 39,907.99-55,071.37-21,758.32

Finding the Fourth Proportional to 39,907.99, 55,071.37 and 21,758.32

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Solution

The fourth proportional to 39,907.99, 55,071.37 and 21,758.32 is: 30,025.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,907.99 : 55,071.37 = 21,758.32 : x
  2. Step 2: Convert to fraction form
    39,907.99/55,071.37 = 21,758.32/x
  3. Step 3: Cross multiply
    39,907.99x = 55,071.37 × 21,758.32
  4. Step 4: Simplify right side
    39,907.99x = 1,198,260,491.30
  5. Step 5: Solve for x
    x = 1,198,260,491.30/39,907.99
  6. Step 6: Final answer
    x = 30,025.58

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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.