Home / 20,855.56-31,279.02-7,698.94

Finding the Fourth Proportional to 20,855.56, 31,279.02 and 7,698.94

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Solution

The fourth proportional to 20,855.56, 31,279.02 and 7,698.94 is: 11,546.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855.56 : 31,279.02 = 7,698.94 : x
  2. Step 2: Convert to fraction form
    20,855.56/31,279.02 = 7,698.94/x
  3. Step 3: Cross multiply
    20,855.56x = 31,279.02 × 7,698.94
  4. Step 4: Simplify right side
    20,855.56x = 240,815,298.24
  5. Step 5: Solve for x
    x = 240,815,298.24/20,855.56
  6. Step 6: Final answer
    x = 11,546.82

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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.