Home / 27,998.62-38,638.20-15,423.34

Finding the Fourth Proportional to 27,998.62, 38,638.20 and 15,423.34

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Solution

The fourth proportional to 27,998.62, 38,638.20 and 15,423.34 is: 21,284.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,998.62 : 38,638.20 = 15,423.34 : x
  2. Step 2: Convert to fraction form
    27,998.62/38,638.20 = 15,423.34/x
  3. Step 3: Cross multiply
    27,998.62x = 38,638.20 × 15,423.34
  4. Step 4: Simplify right side
    27,998.62x = 595,930,095.59
  5. Step 5: Solve for x
    x = 595,930,095.59/27,998.62
  6. Step 6: Final answer
    x = 21,284.27

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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.