Home / 18,720.06-28,055.84-7,613.88

Finding the Fourth Proportional to 18,720.06, 28,055.84 and 7,613.88

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Solution

The fourth proportional to 18,720.06, 28,055.84 and 7,613.88 is: 11,410.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.06 : 28,055.84 = 7,613.88 : x
  2. Step 2: Convert to fraction form
    18,720.06/28,055.84 = 7,613.88/x
  3. Step 3: Cross multiply
    18,720.06x = 28,055.84 × 7,613.88
  4. Step 4: Simplify right side
    18,720.06x = 213,613,799.06
  5. Step 5: Solve for x
    x = 213,613,799.06/18,720.06
  6. Step 6: Final answer
    x = 11,410.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.