Home / 31,472.62-43,382.99-21,383.26

Finding the Fourth Proportional to 31,472.62, 43,382.99 and 21,383.26

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Solution

The fourth proportional to 31,472.62, 43,382.99 and 21,383.26 is: 29,475.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,472.62 : 43,382.99 = 21,383.26 : x
  2. Step 2: Convert to fraction form
    31,472.62/43,382.99 = 21,383.26/x
  3. Step 3: Cross multiply
    31,472.62x = 43,382.99 × 21,383.26
  4. Step 4: Simplify right side
    31,472.62x = 927,669,699.75
  5. Step 5: Solve for x
    x = 927,669,699.75/31,472.62
  6. Step 6: Final answer
    x = 29,475.45

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1.5x scale

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.