Home / 20,679.20-28,536.88-11,248

Finding the Fourth Proportional to 20,679.20, 28,536.88 and 11,248

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Solution

The fourth proportional to 20,679.20, 28,536.88 and 11,248 is: 15,522.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.20 : 28,536.88 = 11,248 : x
  2. Step 2: Convert to fraction form
    20,679.20/28,536.88 = 11,248/x
  3. Step 3: Cross multiply
    20,679.20x = 28,536.88 × 11,248
  4. Step 4: Simplify right side
    20,679.20x = 320,982,826.24
  5. Step 5: Solve for x
    x = 320,982,826.24/20,679.20
  6. Step 6: Final answer
    x = 15,522.01

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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.