Home / 20,216.72-27,866.76-13,489.04

Finding the Fourth Proportional to 20,216.72, 27,866.76 and 13,489.04

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Solution

The fourth proportional to 20,216.72, 27,866.76 and 13,489.04 is: 18,593.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.72 : 27,866.76 = 13,489.04 : x
  2. Step 2: Convert to fraction form
    20,216.72/27,866.76 = 13,489.04/x
  3. Step 3: Cross multiply
    20,216.72x = 27,866.76 × 13,489.04
  4. Step 4: Simplify right side
    20,216.72x = 375,895,840.31
  5. Step 5: Solve for x
    x = 375,895,840.31/20,216.72
  6. Step 6: Final answer
    x = 18,593.31

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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.