Home / 27,806.42-38,376.52-15,872.09

Finding the Fourth Proportional to 27,806.42, 38,376.52 and 15,872.09

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Solution

The fourth proportional to 27,806.42, 38,376.52 and 15,872.09 is: 21,905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,806.42 : 38,376.52 = 15,872.09 : x
  2. Step 2: Convert to fraction form
    27,806.42/38,376.52 = 15,872.09/x
  3. Step 3: Cross multiply
    27,806.42x = 38,376.52 × 15,872.09
  4. Step 4: Simplify right side
    27,806.42x = 609,115,347.76
  5. Step 5: Solve for x
    x = 609,115,347.76/27,806.42
  6. Step 6: Final answer
    x = 21,905.56

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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.