Home / 27,809.00-38,379.17-15,874.13

Finding the Fourth Proportional to 27,809.00, 38,379.17 and 15,874.13

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Solution

The fourth proportional to 27,809.00, 38,379.17 and 15,874.13 is: 21,907.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,809.00 : 38,379.17 = 15,874.13 : x
  2. Step 2: Convert to fraction form
    27,809.00/38,379.17 = 15,874.13/x
  3. Step 3: Cross multiply
    27,809.00x = 38,379.17 × 15,874.13
  4. Step 4: Simplify right side
    27,809.00x = 609,236,069.51
  5. Step 5: Solve for x
    x = 609,236,069.51/27,809.00
  6. Step 6: Final answer
    x = 21,907.87

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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.