Home / 15,731.33-21,709.46-8,561.45

Finding the Fourth Proportional to 15,731.33, 21,709.46 and 8,561.45

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Solution

The fourth proportional to 15,731.33, 21,709.46 and 8,561.45 is: 11,814.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.33 : 21,709.46 = 8,561.45 : x
  2. Step 2: Convert to fraction form
    15,731.33/21,709.46 = 8,561.45/x
  3. Step 3: Cross multiply
    15,731.33x = 21,709.46 × 8,561.45
  4. Step 4: Simplify right side
    15,731.33x = 185,864,531.99
  5. Step 5: Solve for x
    x = 185,864,531.99/15,731.33
  6. Step 6: Final answer
    x = 11,814.93

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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.