Home / 20,933.24-31,403.32-9,699.81

Finding the Fourth Proportional to 20,933.24, 31,403.32 and 9,699.81

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Solution

The fourth proportional to 20,933.24, 31,403.32 and 9,699.81 is: 14,551.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.24 : 31,403.32 = 9,699.81 : x
  2. Step 2: Convert to fraction form
    20,933.24/31,403.32 = 9,699.81/x
  3. Step 3: Cross multiply
    20,933.24x = 31,403.32 × 9,699.81
  4. Step 4: Simplify right side
    20,933.24x = 304,606,210.96
  5. Step 5: Solve for x
    x = 304,606,210.96/20,933.24
  6. Step 6: Final answer
    x = 14,551.31

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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.