Home / 27,918-38,523.62-15,980.64

Finding the Fourth Proportional to 27,918, 38,523.62 and 15,980.64

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Solution

The fourth proportional to 27,918, 38,523.62 and 15,980.64 is: 22,051.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,918 : 38,523.62 = 15,980.64 : x
  2. Step 2: Convert to fraction form
    27,918/38,523.62 = 15,980.64/x
  3. Step 3: Cross multiply
    27,918x = 38,523.62 × 15,980.64
  4. Step 4: Simplify right side
    27,918x = 615,632,102.72
  5. Step 5: Solve for x
    x = 615,632,102.72/27,918
  6. Step 6: Final answer
    x = 22,051.44

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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.