Home / 39,618.78-54,671.67-21,710.22

Finding the Fourth Proportional to 39,618.78, 54,671.67 and 21,710.22

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Solution

The fourth proportional to 39,618.78, 54,671.67 and 21,710.22 is: 29,958.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,618.78 : 54,671.67 = 21,710.22 : x
  2. Step 2: Convert to fraction form
    39,618.78/54,671.67 = 21,710.22/x
  3. Step 3: Cross multiply
    39,618.78x = 54,671.67 × 21,710.22
  4. Step 4: Simplify right side
    39,618.78x = 1,186,933,983.47
  5. Step 5: Solve for x
    x = 1,186,933,983.47/39,618.78
  6. Step 6: Final answer
    x = 29,958.87

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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.