Home / 21,097.07-31,587.96-15,179.87

Finding the Fourth Proportional to 21,097.07, 31,587.96 and 15,179.87

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Solution

The fourth proportional to 21,097.07, 31,587.96 and 15,179.87 is: 22,728.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097.07 : 31,587.96 = 15,179.87 : x
  2. Step 2: Convert to fraction form
    21,097.07/31,587.96 = 15,179.87/x
  3. Step 3: Cross multiply
    21,097.07x = 31,587.96 × 15,179.87
  4. Step 4: Simplify right side
    21,097.07x = 479,500,968.43
  5. Step 5: Solve for x
    x = 479,500,968.43/21,097.07
  6. Step 6: Final answer
    x = 22,728.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.