Home / 39,279.94-54,205.43-21,374.99

Finding the Fourth Proportional to 39,279.94, 54,205.43 and 21,374.99

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Solution

The fourth proportional to 39,279.94, 54,205.43 and 21,374.99 is: 29,497.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.94 : 54,205.43 = 21,374.99 : x
  2. Step 2: Convert to fraction form
    39,279.94/54,205.43 = 21,374.99/x
  3. Step 3: Cross multiply
    39,279.94x = 54,205.43 × 21,374.99
  4. Step 4: Simplify right side
    39,279.94x = 1,158,640,146.29
  5. Step 5: Solve for x
    x = 1,158,640,146.29/39,279.94
  6. Step 6: Final answer
    x = 29,497.00

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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.