Home / 20,775.51-28,668.87-11,344.05

Finding the Fourth Proportional to 20,775.51, 28,668.87 and 11,344.05

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Solution

The fourth proportional to 20,775.51, 28,668.87 and 11,344.05 is: 15,654.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.51 : 28,668.87 = 11,344.05 : x
  2. Step 2: Convert to fraction form
    20,775.51/28,668.87 = 11,344.05/x
  3. Step 3: Cross multiply
    20,775.51x = 28,668.87 × 11,344.05
  4. Step 4: Simplify right side
    20,775.51x = 325,221,094.72
  5. Step 5: Solve for x
    x = 325,221,094.72/20,775.51
  6. Step 6: Final answer
    x = 15,654.06

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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.