Home / 20,671.61-31,006.72-8,984.84

Finding the Fourth Proportional to 20,671.61, 31,006.72 and 8,984.84

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Solution

The fourth proportional to 20,671.61, 31,006.72 and 8,984.84 is: 13,476.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.61 : 31,006.72 = 8,984.84 : x
  2. Step 2: Convert to fraction form
    20,671.61/31,006.72 = 8,984.84/x
  3. Step 3: Cross multiply
    20,671.61x = 31,006.72 × 8,984.84
  4. Step 4: Simplify right side
    20,671.61x = 278,590,418.12
  5. Step 5: Solve for x
    x = 278,590,418.12/20,671.61
  6. Step 6: Final answer
    x = 13,476.96

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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.