Home / 39,880.83-55,037.96-21,975.81

Finding the Fourth Proportional to 39,880.83, 55,037.96 and 21,975.81

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Solution

The fourth proportional to 39,880.83, 55,037.96 and 21,975.81 is: 30,327.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,880.83 : 55,037.96 = 21,975.81 : x
  2. Step 2: Convert to fraction form
    39,880.83/55,037.96 = 21,975.81/x
  3. Step 3: Cross multiply
    39,880.83x = 55,037.96 × 21,975.81
  4. Step 4: Simplify right side
    39,880.83x = 1,209,503,751.75
  5. Step 5: Solve for x
    x = 1,209,503,751.75/39,880.83
  6. Step 6: Final answer
    x = 30,327.95

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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.