Home / 27,866.58-38,455.86-15,930.18

Finding the Fourth Proportional to 27,866.58, 38,455.86 and 15,930.18

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Solution

The fourth proportional to 27,866.58, 38,455.86 and 15,930.18 is: 21,983.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,866.58 : 38,455.86 = 15,930.18 : x
  2. Step 2: Convert to fraction form
    27,866.58/38,455.86 = 15,930.18/x
  3. Step 3: Cross multiply
    27,866.58x = 38,455.86 × 15,930.18
  4. Step 4: Simplify right side
    27,866.58x = 612,608,771.85
  5. Step 5: Solve for x
    x = 612,608,771.85/27,866.58
  6. Step 6: Final answer
    x = 21,983.64

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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.