Home / 20,684.92-31,034.40-9,005.80

Finding the Fourth Proportional to 20,684.92, 31,034.40 and 9,005.80

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Solution

The fourth proportional to 20,684.92, 31,034.40 and 9,005.80 is: 13,511.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.92 : 31,034.40 = 9,005.80 : x
  2. Step 2: Convert to fraction form
    20,684.92/31,034.40 = 9,005.80/x
  3. Step 3: Cross multiply
    20,684.92x = 31,034.40 × 9,005.80
  4. Step 4: Simplify right side
    20,684.92x = 279,489,599.52
  5. Step 5: Solve for x
    x = 279,489,599.52/20,684.92
  6. Step 6: Final answer
    x = 13,511.76

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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.