Home / 31,670.31-43,710.39-18,239.09

Finding the Fourth Proportional to 31,670.31, 43,710.39 and 18,239.09

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Solution

The fourth proportional to 31,670.31, 43,710.39 and 18,239.09 is: 25,173.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,670.31 : 43,710.39 = 18,239.09 : x
  2. Step 2: Convert to fraction form
    31,670.31/43,710.39 = 18,239.09/x
  3. Step 3: Cross multiply
    31,670.31x = 43,710.39 × 18,239.09
  4. Step 4: Simplify right side
    31,670.31x = 797,237,737.15
  5. Step 5: Solve for x
    x = 797,237,737.15/31,670.31
  6. Step 6: Final answer
    x = 25,173.03

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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.