Home / 31,745.49-43,787.82-20,397.08

Finding the Fourth Proportional to 31,745.49, 43,787.82 and 20,397.08

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Solution

The fourth proportional to 31,745.49, 43,787.82 and 20,397.08 is: 28,134.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,745.49 : 43,787.82 = 20,397.08 : x
  2. Step 2: Convert to fraction form
    31,745.49/43,787.82 = 20,397.08/x
  3. Step 3: Cross multiply
    31,745.49x = 43,787.82 × 20,397.08
  4. Step 4: Simplify right side
    31,745.49x = 893,143,853.52
  5. Step 5: Solve for x
    x = 893,143,853.52/31,745.49
  6. Step 6: Final answer
    x = 28,134.51

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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.