Home / 27,960-38,584.80-15,385.20

Finding the Fourth Proportional to 27,960, 38,584.80 and 15,385.20

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Solution

The fourth proportional to 27,960, 38,584.80 and 15,385.20 is: 21,231.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,960 : 38,584.80 = 15,385.20 : x
  2. Step 2: Convert to fraction form
    27,960/38,584.80 = 15,385.20/x
  3. Step 3: Cross multiply
    27,960x = 38,584.80 × 15,385.20
  4. Step 4: Simplify right side
    27,960x = 593,634,864.96
  5. Step 5: Solve for x
    x = 593,634,864.96/27,960
  6. Step 6: Final answer
    x = 21,231.58

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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.