Home / 21,205.94-31,814.15-14,978.09

Finding the Fourth Proportional to 21,205.94, 31,814.15 and 14,978.09

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Solution

The fourth proportional to 21,205.94, 31,814.15 and 14,978.09 is: 22,470.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,205.94 : 31,814.15 = 14,978.09 : x
  2. Step 2: Convert to fraction form
    21,205.94/31,814.15 = 14,978.09/x
  3. Step 3: Cross multiply
    21,205.94x = 31,814.15 × 14,978.09
  4. Step 4: Simplify right side
    21,205.94x = 476,515,206.62
  5. Step 5: Solve for x
    x = 476,515,206.62/21,205.94
  6. Step 6: Final answer
    x = 22,470.84

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1.5x scale

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.