Home / 18,611.57-25,688.01-11,447.64

Finding the Fourth Proportional to 18,611.57, 25,688.01 and 11,447.64

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Solution

The fourth proportional to 18,611.57, 25,688.01 and 11,447.64 is: 15,800.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.57 : 25,688.01 = 11,447.64 : x
  2. Step 2: Convert to fraction form
    18,611.57/25,688.01 = 11,447.64/x
  3. Step 3: Cross multiply
    18,611.57x = 25,688.01 × 11,447.64
  4. Step 4: Simplify right side
    18,611.57x = 294,067,090.80
  5. Step 5: Solve for x
    x = 294,067,090.80/18,611.57
  6. Step 6: Final answer
    x = 15,800.23

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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.