Home / 27,996.35-38,634.96-15,421.10

Finding the Fourth Proportional to 27,996.35, 38,634.96 and 15,421.10

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Solution

The fourth proportional to 27,996.35, 38,634.96 and 15,421.10 is: 21,281.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,996.35 : 38,634.96 = 15,421.10 : x
  2. Step 2: Convert to fraction form
    27,996.35/38,634.96 = 15,421.10/x
  3. Step 3: Cross multiply
    27,996.35x = 38,634.96 × 15,421.10
  4. Step 4: Simplify right side
    27,996.35x = 595,793,349.93
  5. Step 5: Solve for x
    x = 595,793,349.93/27,996.35
  6. Step 6: Final answer
    x = 21,281.11

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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.