Home / 27,815.25-38,385.09-15,240

Finding the Fourth Proportional to 27,815.25, 38,385.09 and 15,240

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Solution

The fourth proportional to 27,815.25, 38,385.09 and 15,240 is: 21,031.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.25 : 38,385.09 = 15,240 : x
  2. Step 2: Convert to fraction form
    27,815.25/38,385.09 = 15,240/x
  3. Step 3: Cross multiply
    27,815.25x = 38,385.09 × 15,240
  4. Step 4: Simplify right side
    27,815.25x = 584,988,771.60
  5. Step 5: Solve for x
    x = 584,988,771.60/27,815.25
  6. Step 6: Final answer
    x = 21,031.22

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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.