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Finding the Fourth Proportional to 13,672.16, 20,508.24 and 10,556.72

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Solution

The fourth proportional to 13,672.16, 20,508.24 and 10,556.72 is: 15,835.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.16 : 20,508.24 = 10,556.72 : x
  2. Step 2: Convert to fraction form
    13,672.16/20,508.24 = 10,556.72/x
  3. Step 3: Cross multiply
    13,672.16x = 20,508.24 × 10,556.72
  4. Step 4: Simplify right side
    13,672.16x = 216,499,747.37
  5. Step 5: Solve for x
    x = 216,499,747.37/13,672.16
  6. Step 6: Final answer
    x = 15,835.08

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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.