Home / 27,996.08-38,634.59-15,420.83

Finding the Fourth Proportional to 27,996.08, 38,634.59 and 15,420.83

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Solution

The fourth proportional to 27,996.08, 38,634.59 and 15,420.83 is: 21,280.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,996.08 : 38,634.59 = 15,420.83 : x
  2. Step 2: Convert to fraction form
    27,996.08/38,634.59 = 15,420.83/x
  3. Step 3: Cross multiply
    27,996.08x = 38,634.59 × 15,420.83
  4. Step 4: Simplify right side
    27,996.08x = 595,777,174.23
  5. Step 5: Solve for x
    x = 595,777,174.23/27,996.08
  6. Step 6: Final answer
    x = 21,280.74

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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.