Home / 15,516.25-21,410.80-8,799.73

Finding the Fourth Proportional to 15,516.25, 21,410.80 and 8,799.73

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Solution

The fourth proportional to 15,516.25, 21,410.80 and 8,799.73 is: 12,142.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.25 : 21,410.80 = 8,799.73 : x
  2. Step 2: Convert to fraction form
    15,516.25/21,410.80 = 8,799.73/x
  3. Step 3: Cross multiply
    15,516.25x = 21,410.80 × 8,799.73
  4. Step 4: Simplify right side
    15,516.25x = 188,409,259.08
  5. Step 5: Solve for x
    x = 188,409,259.08/15,516.25
  6. Step 6: Final answer
    x = 12,142.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.