Home / 28,167.66-38,869.26-15,418.02

Finding the Fourth Proportional to 28,167.66, 38,869.26 and 15,418.02

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Solution

The fourth proportional to 28,167.66, 38,869.26 and 15,418.02 is: 21,275.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,167.66 : 38,869.26 = 15,418.02 : x
  2. Step 2: Convert to fraction form
    28,167.66/38,869.26 = 15,418.02/x
  3. Step 3: Cross multiply
    28,167.66x = 38,869.26 × 15,418.02
  4. Step 4: Simplify right side
    28,167.66x = 599,287,028.07
  5. Step 5: Solve for x
    x = 599,287,028.07/28,167.66
  6. Step 6: Final answer
    x = 21,275.71

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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.