Home / 27,721.59-38,255.82-15,784.89

Finding the Fourth Proportional to 27,721.59, 38,255.82 and 15,784.89

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Solution

The fourth proportional to 27,721.59, 38,255.82 and 15,784.89 is: 21,783.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,721.59 : 38,255.82 = 15,784.89 : x
  2. Step 2: Convert to fraction form
    27,721.59/38,255.82 = 15,784.89/x
  3. Step 3: Cross multiply
    27,721.59x = 38,255.82 × 15,784.89
  4. Step 4: Simplify right side
    27,721.59x = 603,863,910.56
  5. Step 5: Solve for x
    x = 603,863,910.56/27,721.59
  6. Step 6: Final answer
    x = 21,783.16

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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.