Home / 20,858.06-31,283.30-8,377.58

Finding the Fourth Proportional to 20,858.06, 31,283.30 and 8,377.58

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Solution

The fourth proportional to 20,858.06, 31,283.30 and 8,377.58 is: 12,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.06 : 31,283.30 = 8,377.58 : x
  2. Step 2: Convert to fraction form
    20,858.06/31,283.30 = 8,377.58/x
  3. Step 3: Cross multiply
    20,858.06x = 31,283.30 × 8,377.58
  4. Step 4: Simplify right side
    20,858.06x = 262,078,348.41
  5. Step 5: Solve for x
    x = 262,078,348.41/20,858.06
  6. Step 6: Final answer
    x = 12,564.85

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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.