Home / 39,855-55,005.18-25,748.88

Finding the Fourth Proportional to 39,855, 55,005.18 and 25,748.88

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Solution

The fourth proportional to 39,855, 55,005.18 and 25,748.88 is: 35,536.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,855 : 55,005.18 = 25,748.88 : x
  2. Step 2: Convert to fraction form
    39,855/55,005.18 = 25,748.88/x
  3. Step 3: Cross multiply
    39,855x = 55,005.18 × 25,748.88
  4. Step 4: Simplify right side
    39,855x = 1,416,321,779.20
  5. Step 5: Solve for x
    x = 1,416,321,779.20/39,855
  6. Step 6: Final answer
    x = 35,536.87

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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.