Home / 21,491.12-32,236.56-11,692.68

Finding the Fourth Proportional to 21,491.12, 32,236.56 and 11,692.68

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Solution

The fourth proportional to 21,491.12, 32,236.56 and 11,692.68 is: 17,538.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,491.12 : 32,236.56 = 11,692.68 : x
  2. Step 2: Convert to fraction form
    21,491.12/32,236.56 = 11,692.68/x
  3. Step 3: Cross multiply
    21,491.12x = 32,236.56 × 11,692.68
  4. Step 4: Simplify right side
    21,491.12x = 376,931,780.38
  5. Step 5: Solve for x
    x = 376,931,780.38/21,491.12
  6. Step 6: Final answer
    x = 17,538.96

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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.