Home / 20,884.21-31,315.95-6,650.83

Finding the Fourth Proportional to 20,884.21, 31,315.95 and 6,650.83

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Solution

The fourth proportional to 20,884.21, 31,315.95 and 6,650.83 is: 9,972.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.21 : 31,315.95 = 6,650.83 : x
  2. Step 2: Convert to fraction form
    20,884.21/31,315.95 = 6,650.83/x
  3. Step 3: Cross multiply
    20,884.21x = 31,315.95 × 6,650.83
  4. Step 4: Simplify right side
    20,884.21x = 208,276,960.73
  5. Step 5: Solve for x
    x = 208,276,960.73/20,884.21
  6. Step 6: Final answer
    x = 9,972.94

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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.