Home / 27,808.13-38,375.84-15,871.23

Finding the Fourth Proportional to 27,808.13, 38,375.84 and 15,871.23

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Solution

The fourth proportional to 27,808.13, 38,375.84 and 15,871.23 is: 21,902.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,808.13 : 38,375.84 = 15,871.23 : x
  2. Step 2: Convert to fraction form
    27,808.13/38,375.84 = 15,871.23/x
  3. Step 3: Cross multiply
    27,808.13x = 38,375.84 × 15,871.23
  4. Step 4: Simplify right side
    27,808.13x = 609,071,822.76
  5. Step 5: Solve for x
    x = 609,071,822.76/27,808.13
  6. Step 6: Final answer
    x = 21,902.65

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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.