Home / 39,304.81-54,238.94-21,399.88

Finding the Fourth Proportional to 39,304.81, 54,238.94 and 21,399.88

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Solution

The fourth proportional to 39,304.81, 54,238.94 and 21,399.88 is: 29,530.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,304.81 : 54,238.94 = 21,399.88 : x
  2. Step 2: Convert to fraction form
    39,304.81/54,238.94 = 21,399.88/x
  3. Step 3: Cross multiply
    39,304.81x = 54,238.94 × 21,399.88
  4. Step 4: Simplify right side
    39,304.81x = 1,160,706,807.33
  5. Step 5: Solve for x
    x = 1,160,706,807.33/39,304.81
  6. Step 6: Final answer
    x = 29,530.91

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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.