Home / 20,953.88-31,418.92-6,910.08

Finding the Fourth Proportional to 20,953.88, 31,418.92 and 6,910.08

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Solution

The fourth proportional to 20,953.88, 31,418.92 and 6,910.08 is: 10,361.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.88 : 31,418.92 = 6,910.08 : x
  2. Step 2: Convert to fraction form
    20,953.88/31,418.92 = 6,910.08/x
  3. Step 3: Cross multiply
    20,953.88x = 31,418.92 × 6,910.08
  4. Step 4: Simplify right side
    20,953.88x = 217,107,250.71
  5. Step 5: Solve for x
    x = 217,107,250.71/20,953.88
  6. Step 6: Final answer
    x = 10,361.20

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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.