Home / 31,495.45-43,448.41-20,155.85

Finding the Fourth Proportional to 31,495.45, 43,448.41 and 20,155.85

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Solution

The fourth proportional to 31,495.45, 43,448.41 and 20,155.85 is: 27,805.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,495.45 : 43,448.41 = 20,155.85 : x
  2. Step 2: Convert to fraction form
    31,495.45/43,448.41 = 20,155.85/x
  3. Step 3: Cross multiply
    31,495.45x = 43,448.41 × 20,155.85
  4. Step 4: Simplify right side
    31,495.45x = 875,739,692.93
  5. Step 5: Solve for x
    x = 875,739,692.93/31,495.45
  6. Step 6: Final answer
    x = 27,805.28

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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.