Home / 30,939.26-42,707.24-18,364

Finding the Fourth Proportional to 30,939.26, 42,707.24 and 18,364

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Solution

The fourth proportional to 30,939.26, 42,707.24 and 18,364 is: 25,348.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,939.26 : 42,707.24 = 18,364 : x
  2. Step 2: Convert to fraction form
    30,939.26/42,707.24 = 18,364/x
  3. Step 3: Cross multiply
    30,939.26x = 42,707.24 × 18,364
  4. Step 4: Simplify right side
    30,939.26x = 784,275,755.36
  5. Step 5: Solve for x
    x = 784,275,755.36/30,939.26
  6. Step 6: Final answer
    x = 25,348.89

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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.