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Finding the Fourth Proportional to 20,732.63, 28,611.03 and 11,301.20

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Solution

The fourth proportional to 20,732.63, 28,611.03 and 11,301.20 is: 15,595.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.63 : 28,611.03 = 11,301.20 : x
  2. Step 2: Convert to fraction form
    20,732.63/28,611.03 = 11,301.20/x
  3. Step 3: Cross multiply
    20,732.63x = 28,611.03 × 11,301.20
  4. Step 4: Simplify right side
    20,732.63x = 323,338,871.56
  5. Step 5: Solve for x
    x = 323,338,871.56/20,732.63
  6. Step 6: Final answer
    x = 15,595.65

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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.