Home / 39,304.63-54,239.70-21,399.49

Finding the Fourth Proportional to 39,304.63, 54,239.70 and 21,399.49

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Solution

The fourth proportional to 39,304.63, 54,239.70 and 21,399.49 is: 29,530.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,304.63 : 54,239.70 = 21,399.49 : x
  2. Step 2: Convert to fraction form
    39,304.63/54,239.70 = 21,399.49/x
  3. Step 3: Cross multiply
    39,304.63x = 54,239.70 × 21,399.49
  4. Step 4: Simplify right side
    39,304.63x = 1,160,701,917.75
  5. Step 5: Solve for x
    x = 1,160,701,917.75/39,304.63
  6. Step 6: Final answer
    x = 29,530.92

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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.