Home / 28,491.20-39,317.28-17,316.80

Finding the Fourth Proportional to 28,491.20, 39,317.28 and 17,316.80

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Solution

The fourth proportional to 28,491.20, 39,317.28 and 17,316.80 is: 23,896.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,491.20 : 39,317.28 = 17,316.80 : x
  2. Step 2: Convert to fraction form
    28,491.20/39,317.28 = 17,316.80/x
  3. Step 3: Cross multiply
    28,491.20x = 39,317.28 × 17,316.80
  4. Step 4: Simplify right side
    28,491.20x = 680,849,474.30
  5. Step 5: Solve for x
    x = 680,849,474.30/28,491.20
  6. Step 6: Final answer
    x = 23,896.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.