Home / 18,447.89-25,455.80-11,639.34

Finding the Fourth Proportional to 18,447.89, 25,455.80 and 11,639.34

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Solution

The fourth proportional to 18,447.89, 25,455.80 and 11,639.34 is: 16,060.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.89 : 25,455.80 = 11,639.34 : x
  2. Step 2: Convert to fraction form
    18,447.89/25,455.80 = 11,639.34/x
  3. Step 3: Cross multiply
    18,447.89x = 25,455.80 × 11,639.34
  4. Step 4: Simplify right side
    18,447.89x = 296,288,740.27
  5. Step 5: Solve for x
    x = 296,288,740.27/18,447.89
  6. Step 6: Final answer
    x = 16,060.85

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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.