Home / 39,776.52-54,891.80-21,872.68

Finding the Fourth Proportional to 39,776.52, 54,891.80 and 21,872.68

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Solution

The fourth proportional to 39,776.52, 54,891.80 and 21,872.68 is: 30,184.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,776.52 : 54,891.80 = 21,872.68 : x
  2. Step 2: Convert to fraction form
    39,776.52/54,891.80 = 21,872.68/x
  3. Step 3: Cross multiply
    39,776.52x = 54,891.80 × 21,872.68
  4. Step 4: Simplify right side
    39,776.52x = 1,200,630,776.02
  5. Step 5: Solve for x
    x = 1,200,630,776.02/39,776.52
  6. Step 6: Final answer
    x = 30,184.41

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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.