Home / 27,999.09-38,636.91-15,423.84

Finding the Fourth Proportional to 27,999.09, 38,636.91 and 15,423.84

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Solution

The fourth proportional to 27,999.09, 38,636.91 and 15,423.84 is: 21,283.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,999.09 : 38,636.91 = 15,423.84 : x
  2. Step 2: Convert to fraction form
    27,999.09/38,636.91 = 15,423.84/x
  3. Step 3: Cross multiply
    27,999.09x = 38,636.91 × 15,423.84
  4. Step 4: Simplify right side
    27,999.09x = 595,929,517.93
  5. Step 5: Solve for x
    x = 595,929,517.93/27,999.09
  6. Step 6: Final answer
    x = 21,283.89

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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.