Home / 20,681.64-31,025.88-8,201.73

Finding the Fourth Proportional to 20,681.64, 31,025.88 and 8,201.73

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Solution

The fourth proportional to 20,681.64, 31,025.88 and 8,201.73 is: 12,303.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.64 : 31,025.88 = 8,201.73 : x
  2. Step 2: Convert to fraction form
    20,681.64/31,025.88 = 8,201.73/x
  3. Step 3: Cross multiply
    20,681.64x = 31,025.88 × 8,201.73
  4. Step 4: Simplify right side
    20,681.64x = 254,465,890.77
  5. Step 5: Solve for x
    x = 254,465,890.77/20,681.64
  6. Step 6: Final answer
    x = 12,303.95

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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.