Home / 39,784.41-54,903.96-21,880.80

Finding the Fourth Proportional to 39,784.41, 54,903.96 and 21,880.80

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Solution

The fourth proportional to 39,784.41, 54,903.96 and 21,880.80 is: 30,196.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,784.41 : 54,903.96 = 21,880.80 : x
  2. Step 2: Convert to fraction form
    39,784.41/54,903.96 = 21,880.80/x
  3. Step 3: Cross multiply
    39,784.41x = 54,903.96 × 21,880.80
  4. Step 4: Simplify right side
    39,784.41x = 1,201,342,567.97
  5. Step 5: Solve for x
    x = 1,201,342,567.97/39,784.41
  6. Step 6: Final answer
    x = 30,196.31

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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.