Home / 27,809.13-38,379.30-15,874.23

Finding the Fourth Proportional to 27,809.13, 38,379.30 and 15,874.23

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Solution

The fourth proportional to 27,809.13, 38,379.30 and 15,874.23 is: 21,907.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,809.13 : 38,379.30 = 15,874.23 : x
  2. Step 2: Convert to fraction form
    27,809.13/38,379.30 = 15,874.23/x
  3. Step 3: Cross multiply
    27,809.13x = 38,379.30 × 15,874.23
  4. Step 4: Simplify right side
    27,809.13x = 609,241,835.44
  5. Step 5: Solve for x
    x = 609,241,835.44/27,809.13
  6. Step 6: Final answer
    x = 21,907.98

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1.5x scale

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.