Home / 39,619.71-54,675.23-21,714.80

Finding the Fourth Proportional to 39,619.71, 54,675.23 and 21,714.80

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Solution

The fourth proportional to 39,619.71, 54,675.23 and 21,714.80 is: 29,966.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,619.71 : 54,675.23 = 21,714.80 : x
  2. Step 2: Convert to fraction form
    39,619.71/54,675.23 = 21,714.80/x
  3. Step 3: Cross multiply
    39,619.71x = 54,675.23 × 21,714.80
  4. Step 4: Simplify right side
    39,619.71x = 1,187,261,302.45
  5. Step 5: Solve for x
    x = 1,187,261,302.45/39,619.71
  6. Step 6: Final answer
    x = 29,966.43

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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.