Home / 30,478.82-45,721.89-10,753.31

Finding the Fourth Proportional to 30,478.82, 45,721.89 and 10,753.31

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Solution

The fourth proportional to 30,478.82, 45,721.89 and 10,753.31 is: 16,131.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,478.82 : 45,721.89 = 10,753.31 : x
  2. Step 2: Convert to fraction form
    30,478.82/45,721.89 = 10,753.31/x
  3. Step 3: Cross multiply
    30,478.82x = 45,721.89 × 10,753.31
  4. Step 4: Simplify right side
    30,478.82x = 491,661,656.96
  5. Step 5: Solve for x
    x = 491,661,656.96/30,478.82
  6. Step 6: Final answer
    x = 16,131.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.