Home / 20,953.25-31,387.79-9,692.82

Finding the Fourth Proportional to 20,953.25, 31,387.79 and 9,692.82

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Solution

The fourth proportional to 20,953.25, 31,387.79 and 9,692.82 is: 14,519.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.25 : 31,387.79 = 9,692.82 : x
  2. Step 2: Convert to fraction form
    20,953.25/31,387.79 = 9,692.82/x
  3. Step 3: Cross multiply
    20,953.25x = 31,387.79 × 9,692.82
  4. Step 4: Simplify right side
    20,953.25x = 304,236,222.90
  5. Step 5: Solve for x
    x = 304,236,222.90/20,953.25
  6. Step 6: Final answer
    x = 14,519.76

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1.5x scale

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.