Home / 38,231.40-57,347.10-21,318.60

Finding the Fourth Proportional to 38,231.40, 57,347.10 and 21,318.60

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Solution

The fourth proportional to 38,231.40, 57,347.10 and 21,318.60 is: 31,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,231.40 : 57,347.10 = 21,318.60 : x
  2. Step 2: Convert to fraction form
    38,231.40/57,347.10 = 21,318.60/x
  3. Step 3: Cross multiply
    38,231.40x = 57,347.10 × 21,318.60
  4. Step 4: Simplify right side
    38,231.40x = 1,222,559,886.06
  5. Step 5: Solve for x
    x = 1,222,559,886.06/38,231.40
  6. Step 6: Final answer
    x = 31,977.90

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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.