Home / 28,195.09-38,908.62-15,447.65

Finding the Fourth Proportional to 28,195.09, 38,908.62 and 15,447.65

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Solution

The fourth proportional to 28,195.09, 38,908.62 and 15,447.65 is: 21,317.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,195.09 : 38,908.62 = 15,447.65 : x
  2. Step 2: Convert to fraction form
    28,195.09/38,908.62 = 15,447.65/x
  3. Step 3: Cross multiply
    28,195.09x = 38,908.62 × 15,447.65
  4. Step 4: Simplify right side
    28,195.09x = 601,046,549.20
  5. Step 5: Solve for x
    x = 601,046,549.20/28,195.09
  6. Step 6: Final answer
    x = 21,317.42

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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.