Home / 39,742.08-54,845.37-21,838.38

Finding the Fourth Proportional to 39,742.08, 54,845.37 and 21,838.38

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Solution

The fourth proportional to 39,742.08, 54,845.37 and 21,838.38 is: 30,137.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,742.08 : 54,845.37 = 21,838.38 : x
  2. Step 2: Convert to fraction form
    39,742.08/54,845.37 = 21,838.38/x
  3. Step 3: Cross multiply
    39,742.08x = 54,845.37 × 21,838.38
  4. Step 4: Simplify right side
    39,742.08x = 1,197,734,031.30
  5. Step 5: Solve for x
    x = 1,197,734,031.30/39,742.08
  6. Step 6: Final answer
    x = 30,137.68

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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.