Home / 27,996.53-38,635.20-15,421.28

Finding the Fourth Proportional to 27,996.53, 38,635.20 and 15,421.28

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Solution

The fourth proportional to 27,996.53, 38,635.20 and 15,421.28 is: 21,281.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,996.53 : 38,635.20 = 15,421.28 : x
  2. Step 2: Convert to fraction form
    27,996.53/38,635.20 = 15,421.28/x
  3. Step 3: Cross multiply
    27,996.53x = 38,635.20 × 15,421.28
  4. Step 4: Simplify right side
    27,996.53x = 595,804,043.88
  5. Step 5: Solve for x
    x = 595,804,043.88/27,996.53
  6. Step 6: Final answer
    x = 21,281.36

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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.