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Finding the Fourth Proportional to 20,618.96, 30,900.90 and 10,737.52

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Solution

The fourth proportional to 20,618.96, 30,900.90 and 10,737.52 is: 16,091.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.96 : 30,900.90 = 10,737.52 : x
  2. Step 2: Convert to fraction form
    20,618.96/30,900.90 = 10,737.52/x
  3. Step 3: Cross multiply
    20,618.96x = 30,900.90 × 10,737.52
  4. Step 4: Simplify right side
    20,618.96x = 331,799,031.77
  5. Step 5: Solve for x
    x = 331,799,031.77/20,618.96
  6. Step 6: Final answer
    x = 16,091.94

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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.