Home / 27,758.76-38,310.74-15,819.36

Finding the Fourth Proportional to 27,758.76, 38,310.74 and 15,819.36

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Solution

The fourth proportional to 27,758.76, 38,310.74 and 15,819.36 is: 21,832.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,758.76 : 38,310.74 = 15,819.36 : x
  2. Step 2: Convert to fraction form
    27,758.76/38,310.74 = 15,819.36/x
  3. Step 3: Cross multiply
    27,758.76x = 38,310.74 × 15,819.36
  4. Step 4: Simplify right side
    27,758.76x = 606,051,387.93
  5. Step 5: Solve for x
    x = 606,051,387.93/27,758.76
  6. Step 6: Final answer
    x = 21,832.80

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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.