Home / 39,288.21-54,217.56-21,383.34

Finding the Fourth Proportional to 39,288.21, 54,217.56 and 21,383.34

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Solution

The fourth proportional to 39,288.21, 54,217.56 and 21,383.34 is: 29,508.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,288.21 : 54,217.56 = 21,383.34 : x
  2. Step 2: Convert to fraction form
    39,288.21/54,217.56 = 21,383.34/x
  3. Step 3: Cross multiply
    39,288.21x = 54,217.56 × 21,383.34
  4. Step 4: Simplify right side
    39,288.21x = 1,159,352,519.45
  5. Step 5: Solve for x
    x = 1,159,352,519.45/39,288.21
  6. Step 6: Final answer
    x = 29,508.92

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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.