Home / 27,913.86-38,520.09-15,976.89

Finding the Fourth Proportional to 27,913.86, 38,520.09 and 15,976.89

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Solution

The fourth proportional to 27,913.86, 38,520.09 and 15,976.89 is: 22,047.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,913.86 : 38,520.09 = 15,976.89 : x
  2. Step 2: Convert to fraction form
    27,913.86/38,520.09 = 15,976.89/x
  3. Step 3: Cross multiply
    27,913.86x = 38,520.09 × 15,976.89
  4. Step 4: Simplify right side
    27,913.86x = 615,431,240.72
  5. Step 5: Solve for x
    x = 615,431,240.72/27,913.86
  6. Step 6: Final answer
    x = 22,047.51

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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.