Home / 27,819.50-38,390.49-15,072.32

Finding the Fourth Proportional to 27,819.50, 38,390.49 and 15,072.32

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Solution

The fourth proportional to 27,819.50, 38,390.49 and 15,072.32 is: 20,799.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,819.50 : 38,390.49 = 15,072.32 : x
  2. Step 2: Convert to fraction form
    27,819.50/38,390.49 = 15,072.32/x
  3. Step 3: Cross multiply
    27,819.50x = 38,390.49 × 15,072.32
  4. Step 4: Simplify right side
    27,819.50x = 578,633,846.21
  5. Step 5: Solve for x
    x = 578,633,846.21/27,819.50
  6. Step 6: Final answer
    x = 20,799.58

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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.