Home / 18,128.12-25,030.96-11,757.74

Finding the Fourth Proportional to 18,128.12, 25,030.96 and 11,757.74

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Solution

The fourth proportional to 18,128.12, 25,030.96 and 11,757.74 is: 16,234.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.12 : 25,030.96 = 11,757.74 : x
  2. Step 2: Convert to fraction form
    18,128.12/25,030.96 = 11,757.74/x
  3. Step 3: Cross multiply
    18,128.12x = 25,030.96 × 11,757.74
  4. Step 4: Simplify right side
    18,128.12x = 294,307,365.08
  5. Step 5: Solve for x
    x = 294,307,365.08/18,128.12
  6. Step 6: Final answer
    x = 16,234.86

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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.