Home / 27,839.72-38,455.62-20,753.84

Finding the Fourth Proportional to 27,839.72, 38,455.62 and 20,753.84

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Solution

The fourth proportional to 27,839.72, 38,455.62 and 20,753.84 is: 28,667.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,839.72 : 38,455.62 = 20,753.84 : x
  2. Step 2: Convert to fraction form
    27,839.72/38,455.62 = 20,753.84/x
  3. Step 3: Cross multiply
    27,839.72x = 38,455.62 × 20,753.84
  4. Step 4: Simplify right side
    27,839.72x = 798,101,784.58
  5. Step 5: Solve for x
    x = 798,101,784.58/27,839.72
  6. Step 6: Final answer
    x = 28,667.74

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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.