Home / 39,397.87-54,370.43-21,493.86

Finding the Fourth Proportional to 39,397.87, 54,370.43 and 21,493.86

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Solution

The fourth proportional to 39,397.87, 54,370.43 and 21,493.86 is: 29,662.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,397.87 : 54,370.43 = 21,493.86 : x
  2. Step 2: Convert to fraction form
    39,397.87/54,370.43 = 21,493.86/x
  3. Step 3: Cross multiply
    39,397.87x = 54,370.43 × 21,493.86
  4. Step 4: Simplify right side
    39,397.87x = 1,168,630,410.56
  5. Step 5: Solve for x
    x = 1,168,630,410.56/39,397.87
  6. Step 6: Final answer
    x = 29,662.27

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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.