Home / 28,965.60-39,975.12-17,022.96

Finding the Fourth Proportional to 28,965.60, 39,975.12 and 17,022.96

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Solution

The fourth proportional to 28,965.60, 39,975.12 and 17,022.96 is: 23,493.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965.60 : 39,975.12 = 17,022.96 : x
  2. Step 2: Convert to fraction form
    28,965.60/39,975.12 = 17,022.96/x
  3. Step 3: Cross multiply
    28,965.60x = 39,975.12 × 17,022.96
  4. Step 4: Simplify right side
    28,965.60x = 680,494,868.76
  5. Step 5: Solve for x
    x = 680,494,868.76/28,965.60
  6. Step 6: Final answer
    x = 23,493.21

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Why These Related Problems?

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