Home / 39,304.58-54,239.09-21,399.46

Finding the Fourth Proportional to 39,304.58, 54,239.09 and 21,399.46

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Solution

The fourth proportional to 39,304.58, 54,239.09 and 21,399.46 is: 29,530.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,304.58 : 54,239.09 = 21,399.46 : x
  2. Step 2: Convert to fraction form
    39,304.58/54,239.09 = 21,399.46/x
  3. Step 3: Cross multiply
    39,304.58x = 54,239.09 × 21,399.46
  4. Step 4: Simplify right side
    39,304.58x = 1,160,686,994.30
  5. Step 5: Solve for x
    x = 1,160,686,994.30/39,304.58
  6. Step 6: Final answer
    x = 29,530.58

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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.