Home / 19,985.94-29,934.36-14,124.78

Finding the Fourth Proportional to 19,985.94, 29,934.36 and 14,124.78

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Solution

The fourth proportional to 19,985.94, 29,934.36 and 14,124.78 is: 21,155.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.94 : 29,934.36 = 14,124.78 : x
  2. Step 2: Convert to fraction form
    19,985.94/29,934.36 = 14,124.78/x
  3. Step 3: Cross multiply
    19,985.94x = 29,934.36 × 14,124.78
  4. Step 4: Simplify right side
    19,985.94x = 422,816,249.44
  5. Step 5: Solve for x
    x = 422,816,249.44/19,985.94
  6. Step 6: Final answer
    x = 21,155.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.