Home / 39,412.33-54,387.98-21,507.55

Finding the Fourth Proportional to 39,412.33, 54,387.98 and 21,507.55

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Solution

The fourth proportional to 39,412.33, 54,387.98 and 21,507.55 is: 29,679.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,412.33 : 54,387.98 = 21,507.55 : x
  2. Step 2: Convert to fraction form
    39,412.33/54,387.98 = 21,507.55/x
  3. Step 3: Cross multiply
    39,412.33x = 54,387.98 × 21,507.55
  4. Step 4: Simplify right side
    39,412.33x = 1,169,751,927.31
  5. Step 5: Solve for x
    x = 1,169,751,927.31/39,412.33
  6. Step 6: Final answer
    x = 29,679.85

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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.