Home / 39,985.85-55,179.41-21,837.06

Finding the Fourth Proportional to 39,985.85, 55,179.41 and 21,837.06

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Solution

The fourth proportional to 39,985.85, 55,179.41 and 21,837.06 is: 30,134.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,985.85 : 55,179.41 = 21,837.06 : x
  2. Step 2: Convert to fraction form
    39,985.85/55,179.41 = 21,837.06/x
  3. Step 3: Cross multiply
    39,985.85x = 55,179.41 × 21,837.06
  4. Step 4: Simplify right side
    39,985.85x = 1,204,956,205.46
  5. Step 5: Solve for x
    x = 1,204,956,205.46/39,985.85
  6. Step 6: Final answer
    x = 30,134.57

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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.