Home / 39,880.83-55,034.77-21,977.49

Finding the Fourth Proportional to 39,880.83, 55,034.77 and 21,977.49

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Solution

The fourth proportional to 39,880.83, 55,034.77 and 21,977.49 is: 30,328.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,880.83 : 55,034.77 = 21,977.49 : x
  2. Step 2: Convert to fraction form
    39,880.83/55,034.77 = 21,977.49/x
  3. Step 3: Cross multiply
    39,880.83x = 55,034.77 × 21,977.49
  4. Step 4: Simplify right side
    39,880.83x = 1,209,526,107.33
  5. Step 5: Solve for x
    x = 1,209,526,107.33/39,880.83
  6. Step 6: Final answer
    x = 30,328.51

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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.