Home / 31,663.10-43,676.03-20,908.07

Finding the Fourth Proportional to 31,663.10, 43,676.03 and 20,908.07

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Solution

The fourth proportional to 31,663.10, 43,676.03 and 20,908.07 is: 28,840.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,663.10 : 43,676.03 = 20,908.07 : x
  2. Step 2: Convert to fraction form
    31,663.10/43,676.03 = 20,908.07/x
  3. Step 3: Cross multiply
    31,663.10x = 43,676.03 × 20,908.07
  4. Step 4: Simplify right side
    31,663.10x = 913,181,274.18
  5. Step 5: Solve for x
    x = 913,181,274.18/31,663.10
  6. Step 6: Final answer
    x = 28,840.56

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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.