Home / 20,679.01-28,536.68-11,480.24

Finding the Fourth Proportional to 20,679.01, 28,536.68 and 11,480.24

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Solution

The fourth proportional to 20,679.01, 28,536.68 and 11,480.24 is: 15,842.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.01 : 28,536.68 = 11,480.24 : x
  2. Step 2: Convert to fraction form
    20,679.01/28,536.68 = 11,480.24/x
  3. Step 3: Cross multiply
    20,679.01x = 28,536.68 × 11,480.24
  4. Step 4: Simplify right side
    20,679.01x = 327,607,935.20
  5. Step 5: Solve for x
    x = 327,607,935.20/20,679.01
  6. Step 6: Final answer
    x = 15,842.53

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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.