Home / 20,941.41-31,399.83-8,461.83

Finding the Fourth Proportional to 20,941.41, 31,399.83 and 8,461.83

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Solution

The fourth proportional to 20,941.41, 31,399.83 and 8,461.83 is: 12,687.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.41 : 31,399.83 = 8,461.83 : x
  2. Step 2: Convert to fraction form
    20,941.41/31,399.83 = 8,461.83/x
  3. Step 3: Cross multiply
    20,941.41x = 31,399.83 × 8,461.83
  4. Step 4: Simplify right side
    20,941.41x = 265,700,023.49
  5. Step 5: Solve for x
    x = 265,700,023.49/20,941.41
  6. Step 6: Final answer
    x = 12,687.78

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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.