Home / 28,971.10-39,976.82-16,222.51

Finding the Fourth Proportional to 28,971.10, 39,976.82 and 16,222.51

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Solution

The fourth proportional to 28,971.10, 39,976.82 and 16,222.51 is: 22,385.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.10 : 39,976.82 = 16,222.51 : x
  2. Step 2: Convert to fraction form
    28,971.10/39,976.82 = 16,222.51/x
  3. Step 3: Cross multiply
    28,971.10x = 39,976.82 × 16,222.51
  4. Step 4: Simplify right side
    28,971.10x = 648,524,346.29
  5. Step 5: Solve for x
    x = 648,524,346.29/28,971.10
  6. Step 6: Final answer
    x = 22,385.22

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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.