Home / 39,209.64-54,109.53-21,304.79

Finding the Fourth Proportional to 39,209.64, 54,109.53 and 21,304.79

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Solution

The fourth proportional to 39,209.64, 54,109.53 and 21,304.79 is: 29,400.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,209.64 : 54,109.53 = 21,304.79 : x
  2. Step 2: Convert to fraction form
    39,209.64/54,109.53 = 21,304.79/x
  3. Step 3: Cross multiply
    39,209.64x = 54,109.53 × 21,304.79
  4. Step 4: Simplify right side
    39,209.64x = 1,152,792,173.65
  5. Step 5: Solve for x
    x = 1,152,792,173.65/39,209.64
  6. Step 6: Final answer
    x = 29,400.73

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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.