Home / 20,858.88-31,288.72-6,818.96

Finding the Fourth Proportional to 20,858.88, 31,288.72 and 6,818.96

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Solution

The fourth proportional to 20,858.88, 31,288.72 and 6,818.96 is: 10,228.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.88 : 31,288.72 = 6,818.96 : x
  2. Step 2: Convert to fraction form
    20,858.88/31,288.72 = 6,818.96/x
  3. Step 3: Cross multiply
    20,858.88x = 31,288.72 × 6,818.96
  4. Step 4: Simplify right side
    20,858.88x = 213,356,530.13
  5. Step 5: Solve for x
    x = 213,356,530.13/20,858.88
  6. Step 6: Final answer
    x = 10,228.57

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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.