Home / 18,976.53-26,186.31-11,421.39

Finding the Fourth Proportional to 18,976.53, 26,186.31 and 11,421.39

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Solution

The fourth proportional to 18,976.53, 26,186.31 and 11,421.39 is: 15,760.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,976.53 : 26,186.31 = 11,421.39 : x
  2. Step 2: Convert to fraction form
    18,976.53/26,186.31 = 11,421.39/x
  3. Step 3: Cross multiply
    18,976.53x = 26,186.31 × 11,421.39
  4. Step 4: Simplify right side
    18,976.53x = 299,084,059.17
  5. Step 5: Solve for x
    x = 299,084,059.17/18,976.53
  6. Step 6: Final answer
    x = 15,760.73

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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.