Home / 18,740.66-25,865.31-11,187.38

Finding the Fourth Proportional to 18,740.66, 25,865.31 and 11,187.38

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Solution

The fourth proportional to 18,740.66, 25,865.31 and 11,187.38 is: 15,440.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.66 : 25,865.31 = 11,187.38 : x
  2. Step 2: Convert to fraction form
    18,740.66/25,865.31 = 11,187.38/x
  3. Step 3: Cross multiply
    18,740.66x = 25,865.31 × 11,187.38
  4. Step 4: Simplify right side
    18,740.66x = 289,365,051.79
  5. Step 5: Solve for x
    x = 289,365,051.79/18,740.66
  6. Step 6: Final answer
    x = 15,440.49

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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.