Home / 39,304.50-54,239.40-21,399.84

Finding the Fourth Proportional to 39,304.50, 54,239.40 and 21,399.84

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Solution

The fourth proportional to 39,304.50, 54,239.40 and 21,399.84 is: 29,531.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,304.50 : 54,239.40 = 21,399.84 : x
  2. Step 2: Convert to fraction form
    39,304.50/54,239.40 = 21,399.84/x
  3. Step 3: Cross multiply
    39,304.50x = 54,239.40 × 21,399.84
  4. Step 4: Simplify right side
    39,304.50x = 1,160,714,481.70
  5. Step 5: Solve for x
    x = 1,160,714,481.70/39,304.50
  6. Step 6: Final answer
    x = 29,531.34

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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.