Home / 31,839.48-47,693.59-18,651.87

Finding the Fourth Proportional to 31,839.48, 47,693.59 and 18,651.87

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Solution

The fourth proportional to 31,839.48, 47,693.59 and 18,651.87 is: 27,939.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,839.48 : 47,693.59 = 18,651.87 : x
  2. Step 2: Convert to fraction form
    31,839.48/47,693.59 = 18,651.87/x
  3. Step 3: Cross multiply
    31,839.48x = 47,693.59 × 18,651.87
  4. Step 4: Simplify right side
    31,839.48x = 889,574,593.88
  5. Step 5: Solve for x
    x = 889,574,593.88/31,839.48
  6. Step 6: Final answer
    x = 27,939.36

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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.