Home / 39,417.84-54,395.82-21,512.79

Finding the Fourth Proportional to 39,417.84, 54,395.82 and 21,512.79

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Solution

The fourth proportional to 39,417.84, 54,395.82 and 21,512.79 is: 29,687.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,417.84 : 54,395.82 = 21,512.79 : x
  2. Step 2: Convert to fraction form
    39,417.84/54,395.82 = 21,512.79/x
  3. Step 3: Cross multiply
    39,417.84x = 54,395.82 × 21,512.79
  4. Step 4: Simplify right side
    39,417.84x = 1,170,205,852.54
  5. Step 5: Solve for x
    x = 1,170,205,852.54/39,417.84
  6. Step 6: Final answer
    x = 29,687.21

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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.