Home / 39,429.84-54,412.38-21,524.79

Finding the Fourth Proportional to 39,429.84, 54,412.38 and 21,524.79

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Solution

The fourth proportional to 39,429.84, 54,412.38 and 21,524.79 is: 29,703.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,429.84 : 54,412.38 = 21,524.79 : x
  2. Step 2: Convert to fraction form
    39,429.84/54,412.38 = 21,524.79/x
  3. Step 3: Cross multiply
    39,429.84x = 54,412.38 × 21,524.79
  4. Step 4: Simplify right side
    39,429.84x = 1,171,215,052.90
  5. Step 5: Solve for x
    x = 1,171,215,052.90/39,429.84
  6. Step 6: Final answer
    x = 29,703.77

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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.