Home / 38,675.40-57,936.30-21,113.80

Finding the Fourth Proportional to 38,675.40, 57,936.30 and 21,113.80

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Solution

The fourth proportional to 38,675.40, 57,936.30 and 21,113.80 is: 31,628.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,675.40 : 57,936.30 = 21,113.80 : x
  2. Step 2: Convert to fraction form
    38,675.40/57,936.30 = 21,113.80/x
  3. Step 3: Cross multiply
    38,675.40x = 57,936.30 × 21,113.80
  4. Step 4: Simplify right side
    38,675.40x = 1,223,255,450.94
  5. Step 5: Solve for x
    x = 1,223,255,450.94/38,675.40
  6. Step 6: Final answer
    x = 31,628.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.