Home / 20,942.10-31,415.88-6,903.58

Finding the Fourth Proportional to 20,942.10, 31,415.88 and 6,903.58

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Solution

The fourth proportional to 20,942.10, 31,415.88 and 6,903.58 is: 10,356.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.10 : 31,415.88 = 6,903.58 : x
  2. Step 2: Convert to fraction form
    20,942.10/31,415.88 = 6,903.58/x
  3. Step 3: Cross multiply
    20,942.10x = 31,415.88 × 6,903.58
  4. Step 4: Simplify right side
    20,942.10x = 216,882,040.85
  5. Step 5: Solve for x
    x = 216,882,040.85/20,942.10
  6. Step 6: Final answer
    x = 10,356.27

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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.