Home / 20,995.88-31,495.20-6,956.86

Finding the Fourth Proportional to 20,995.88, 31,495.20 and 6,956.86

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Solution

The fourth proportional to 20,995.88, 31,495.20 and 6,956.86 is: 10,435.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.88 : 31,495.20 = 6,956.86 : x
  2. Step 2: Convert to fraction form
    20,995.88/31,495.20 = 6,956.86/x
  3. Step 3: Cross multiply
    20,995.88x = 31,495.20 × 6,956.86
  4. Step 4: Simplify right side
    20,995.88x = 219,107,697.07
  5. Step 5: Solve for x
    x = 219,107,697.07/20,995.88
  6. Step 6: Final answer
    x = 10,435.75

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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.