Home / 27,779.88-38,336.54-15,843.92

Finding the Fourth Proportional to 27,779.88, 38,336.54 and 15,843.92

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Solution

The fourth proportional to 27,779.88, 38,336.54 and 15,843.92 is: 21,864.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,779.88 : 38,336.54 = 15,843.92 : x
  2. Step 2: Convert to fraction form
    27,779.88/38,336.54 = 15,843.92/x
  3. Step 3: Cross multiply
    27,779.88x = 38,336.54 × 15,843.92
  4. Step 4: Simplify right side
    27,779.88x = 607,400,801.93
  5. Step 5: Solve for x
    x = 607,400,801.93/27,779.88
  6. Step 6: Final answer
    x = 21,864.77

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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.