Home / 28,251.08-38,969.79-18,176.30

Finding the Fourth Proportional to 28,251.08, 38,969.79 and 18,176.30

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Solution

The fourth proportional to 28,251.08, 38,969.79 and 18,176.30 is: 25,072.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.08 : 38,969.79 = 18,176.30 : x
  2. Step 2: Convert to fraction form
    28,251.08/38,969.79 = 18,176.30/x
  3. Step 3: Cross multiply
    28,251.08x = 38,969.79 × 18,176.30
  4. Step 4: Simplify right side
    28,251.08x = 708,326,399.13
  5. Step 5: Solve for x
    x = 708,326,399.13/28,251.08
  6. Step 6: Final answer
    x = 25,072.55

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1.5x scale

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.