Home / 39,209.98-54,109.56-21,305.02

Finding the Fourth Proportional to 39,209.98, 54,109.56 and 21,305.02

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Solution

The fourth proportional to 39,209.98, 54,109.56 and 21,305.02 is: 29,400.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,209.98 : 54,109.56 = 21,305.02 : x
  2. Step 2: Convert to fraction form
    39,209.98/54,109.56 = 21,305.02/x
  3. Step 3: Cross multiply
    39,209.98x = 54,109.56 × 21,305.02
  4. Step 4: Simplify right side
    39,209.98x = 1,152,805,257.99
  5. Step 5: Solve for x
    x = 1,152,805,257.99/39,209.98
  6. Step 6: Final answer
    x = 29,400.81

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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.