Home / 39,726.05-54,820.19-21,819.98

Finding the Fourth Proportional to 39,726.05, 54,820.19 and 21,819.98

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Solution

The fourth proportional to 39,726.05, 54,820.19 and 21,819.98 is: 30,110.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,726.05 : 54,820.19 = 21,819.98 : x
  2. Step 2: Convert to fraction form
    39,726.05/54,820.19 = 21,819.98/x
  3. Step 3: Cross multiply
    39,726.05x = 54,820.19 × 21,819.98
  4. Step 4: Simplify right side
    39,726.05x = 1,196,175,641.00
  5. Step 5: Solve for x
    x = 1,196,175,641.00/39,726.05
  6. Step 6: Final answer
    x = 30,110.61

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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.