Home / 39,617.12-54,669.24-21,708.56

Finding the Fourth Proportional to 39,617.12, 54,669.24 and 21,708.56

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Solution

The fourth proportional to 39,617.12, 54,669.24 and 21,708.56 is: 29,956.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,617.12 : 54,669.24 = 21,708.56 : x
  2. Step 2: Convert to fraction form
    39,617.12/54,669.24 = 21,708.56/x
  3. Step 3: Cross multiply
    39,617.12x = 54,669.24 × 21,708.56
  4. Step 4: Simplify right side
    39,617.12x = 1,186,790,476.69
  5. Step 5: Solve for x
    x = 1,186,790,476.69/39,617.12
  6. Step 6: Final answer
    x = 29,956.51

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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.