Home / 27,996.24-38,633.96-15,420.72

Finding the Fourth Proportional to 27,996.24, 38,633.96 and 15,420.72

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Solution

The fourth proportional to 27,996.24, 38,633.96 and 15,420.72 is: 21,280.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,996.24 : 38,633.96 = 15,420.72 : x
  2. Step 2: Convert to fraction form
    27,996.24/38,633.96 = 15,420.72/x
  3. Step 3: Cross multiply
    27,996.24x = 38,633.96 × 15,420.72
  4. Step 4: Simplify right side
    27,996.24x = 595,763,479.65
  5. Step 5: Solve for x
    x = 595,763,479.65/27,996.24
  6. Step 6: Final answer
    x = 21,280.12

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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.