Home / 38,814-53,563.32-21,150

Finding the Fourth Proportional to 38,814, 53,563.32 and 21,150

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Solution

The fourth proportional to 38,814, 53,563.32 and 21,150 is: 29,187

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,814 : 53,563.32 = 21,150 : x
  2. Step 2: Convert to fraction form
    38,814/53,563.32 = 21,150/x
  3. Step 3: Cross multiply
    38,814x = 53,563.32 × 21,150
  4. Step 4: Simplify right side
    38,814x = 1,132,864,218
  5. Step 5: Solve for x
    x = 1,132,864,218/38,814
  6. Step 6: Final answer
    x = 29,187

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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.