Home / 20,772.12-28,671.66-14,486.52

Finding the Fourth Proportional to 20,772.12, 28,671.66 and 14,486.52

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Solution

The fourth proportional to 20,772.12, 28,671.66 and 14,486.52 is: 19,995.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.12 : 28,671.66 = 14,486.52 : x
  2. Step 2: Convert to fraction form
    20,772.12/28,671.66 = 14,486.52/x
  3. Step 3: Cross multiply
    20,772.12x = 28,671.66 × 14,486.52
  4. Step 4: Simplify right side
    20,772.12x = 415,352,576.02
  5. Step 5: Solve for x
    x = 415,352,576.02/20,772.12
  6. Step 6: Final answer
    x = 19,995.68

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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.