Home / 20,801.41-31,160.84-9,692.80

Finding the Fourth Proportional to 20,801.41, 31,160.84 and 9,692.80

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Solution

The fourth proportional to 20,801.41, 31,160.84 and 9,692.80 is: 14,519.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.41 : 31,160.84 = 9,692.80 : x
  2. Step 2: Convert to fraction form
    20,801.41/31,160.84 = 9,692.80/x
  3. Step 3: Cross multiply
    20,801.41x = 31,160.84 × 9,692.80
  4. Step 4: Simplify right side
    20,801.41x = 302,035,663.59
  5. Step 5: Solve for x
    x = 302,035,663.59/20,801.41
  6. Step 6: Final answer
    x = 14,519.96

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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.