Home / 27,987.44-38,610.88-18,539.60

Finding the Fourth Proportional to 27,987.44, 38,610.88 and 18,539.60

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Solution

The fourth proportional to 27,987.44, 38,610.88 and 18,539.60 is: 25,576.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.44 : 38,610.88 = 18,539.60 : x
  2. Step 2: Convert to fraction form
    27,987.44/38,610.88 = 18,539.60/x
  3. Step 3: Cross multiply
    27,987.44x = 38,610.88 × 18,539.60
  4. Step 4: Simplify right side
    27,987.44x = 715,830,031.44
  5. Step 5: Solve for x
    x = 715,830,031.44/27,987.44
  6. Step 6: Final answer
    x = 25,576.84

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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.