Home / 38,507.94-57,780.27-20,977.38

Finding the Fourth Proportional to 38,507.94, 57,780.27 and 20,977.38

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Solution

The fourth proportional to 38,507.94, 57,780.27 and 20,977.38 is: 31,476.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,507.94 : 57,780.27 = 20,977.38 : x
  2. Step 2: Convert to fraction form
    38,507.94/57,780.27 = 20,977.38/x
  3. Step 3: Cross multiply
    38,507.94x = 57,780.27 × 20,977.38
  4. Step 4: Simplify right side
    38,507.94x = 1,212,078,680.29
  5. Step 5: Solve for x
    x = 1,212,078,680.29/38,507.94
  6. Step 6: Final answer
    x = 31,476.07

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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.