Home / 38,508.36-53,140.89-21,512.88

Finding the Fourth Proportional to 38,508.36, 53,140.89 and 21,512.88

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Solution

The fourth proportional to 38,508.36, 53,140.89 and 21,512.88 is: 29,687.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,508.36 : 53,140.89 = 21,512.88 : x
  2. Step 2: Convert to fraction form
    38,508.36/53,140.89 = 21,512.88/x
  3. Step 3: Cross multiply
    38,508.36x = 53,140.89 × 21,512.88
  4. Step 4: Simplify right side
    38,508.36x = 1,143,213,589.66
  5. Step 5: Solve for x
    x = 1,143,213,589.66/38,508.36
  6. Step 6: Final answer
    x = 29,687.41

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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.