Home / 39,431.79-54,417.09-21,527.97

Finding the Fourth Proportional to 39,431.79, 54,417.09 and 21,527.97

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Solution

The fourth proportional to 39,431.79, 54,417.09 and 21,527.97 is: 29,709.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,431.79 : 54,417.09 = 21,527.97 : x
  2. Step 2: Convert to fraction form
    39,431.79/54,417.09 = 21,527.97/x
  3. Step 3: Cross multiply
    39,431.79x = 54,417.09 × 21,527.97
  4. Step 4: Simplify right side
    39,431.79x = 1,171,489,481.01
  5. Step 5: Solve for x
    x = 1,171,489,481.01/39,431.79
  6. Step 6: Final answer
    x = 29,709.26

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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.