Home / 20,671.62-31,006.74-8,984.85

Finding the Fourth Proportional to 20,671.62, 31,006.74 and 8,984.85

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Solution

The fourth proportional to 20,671.62, 31,006.74 and 8,984.85 is: 13,476.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.62 : 31,006.74 = 8,984.85 : x
  2. Step 2: Convert to fraction form
    20,671.62/31,006.74 = 8,984.85/x
  3. Step 3: Cross multiply
    20,671.62x = 31,006.74 × 8,984.85
  4. Step 4: Simplify right side
    20,671.62x = 278,590,907.89
  5. Step 5: Solve for x
    x = 278,590,907.89/20,671.62
  6. Step 6: Final answer
    x = 13,476.98

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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.