Home / 18,878.58-26,042.63-11,321.28

Finding the Fourth Proportional to 18,878.58, 26,042.63 and 11,321.28

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Solution

The fourth proportional to 18,878.58, 26,042.63 and 11,321.28 is: 15,617.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.58 : 26,042.63 = 11,321.28 : x
  2. Step 2: Convert to fraction form
    18,878.58/26,042.63 = 11,321.28/x
  3. Step 3: Cross multiply
    18,878.58x = 26,042.63 × 11,321.28
  4. Step 4: Simplify right side
    18,878.58x = 294,835,849.56
  5. Step 5: Solve for x
    x = 294,835,849.56/18,878.58
  6. Step 6: Final answer
    x = 15,617.48

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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.