Home / 21,665.20-32,501.24-9,185.28

Finding the Fourth Proportional to 21,665.20, 32,501.24 and 9,185.28

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Solution

The fourth proportional to 21,665.20, 32,501.24 and 9,185.28 is: 13,779.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,665.20 : 32,501.24 = 9,185.28 : x
  2. Step 2: Convert to fraction form
    21,665.20/32,501.24 = 9,185.28/x
  3. Step 3: Cross multiply
    21,665.20x = 32,501.24 × 9,185.28
  4. Step 4: Simplify right side
    21,665.20x = 298,532,989.75
  5. Step 5: Solve for x
    x = 298,532,989.75/21,665.20
  6. Step 6: Final answer
    x = 13,779.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.