Home / 39,209.09-54,108.77-21,304.08

Finding the Fourth Proportional to 39,209.09, 54,108.77 and 21,304.08

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Solution

The fourth proportional to 39,209.09, 54,108.77 and 21,304.08 is: 29,399.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,209.09 : 54,108.77 = 21,304.08 : x
  2. Step 2: Convert to fraction form
    39,209.09/54,108.77 = 21,304.08/x
  3. Step 3: Cross multiply
    39,209.09x = 54,108.77 × 21,304.08
  4. Step 4: Simplify right side
    39,209.09x = 1,152,737,458.26
  5. Step 5: Solve for x
    x = 1,152,737,458.26/39,209.09
  6. Step 6: Final answer
    x = 29,399.75

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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.