Home / 21,071.15-31,594.41-7,924.55

Finding the Fourth Proportional to 21,071.15, 31,594.41 and 7,924.55

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Solution

The fourth proportional to 21,071.15, 31,594.41 and 7,924.55 is: 11,882.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.15 : 31,594.41 = 7,924.55 : x
  2. Step 2: Convert to fraction form
    21,071.15/31,594.41 = 7,924.55/x
  3. Step 3: Cross multiply
    21,071.15x = 31,594.41 × 7,924.55
  4. Step 4: Simplify right side
    21,071.15x = 250,371,481.77
  5. Step 5: Solve for x
    x = 250,371,481.77/21,071.15
  6. Step 6: Final answer
    x = 11,882.19

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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.