Home / 20,804.88-31,207.95-8,154.09

Finding the Fourth Proportional to 20,804.88, 31,207.95 and 8,154.09

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Solution

The fourth proportional to 20,804.88, 31,207.95 and 8,154.09 is: 12,231.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.88 : 31,207.95 = 8,154.09 : x
  2. Step 2: Convert to fraction form
    20,804.88/31,207.95 = 8,154.09/x
  3. Step 3: Cross multiply
    20,804.88x = 31,207.95 × 8,154.09
  4. Step 4: Simplify right side
    20,804.88x = 254,472,433.02
  5. Step 5: Solve for x
    x = 254,472,433.02/20,804.88
  6. Step 6: Final answer
    x = 12,231.38

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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.