Home / 28,969.60-39,979.24-17,795.20

Finding the Fourth Proportional to 28,969.60, 39,979.24 and 17,795.20

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Solution

The fourth proportional to 28,969.60, 39,979.24 and 17,795.20 is: 24,558.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,969.60 : 39,979.24 = 17,795.20 : x
  2. Step 2: Convert to fraction form
    28,969.60/39,979.24 = 17,795.20/x
  3. Step 3: Cross multiply
    28,969.60x = 39,979.24 × 17,795.20
  4. Step 4: Simplify right side
    28,969.60x = 711,438,571.65
  5. Step 5: Solve for x
    x = 711,438,571.65/28,969.60
  6. Step 6: Final answer
    x = 24,558.11

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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.