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Finding the Fourth Proportional to 20,465.98, 30,644.22 and 11,688.82

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Solution

The fourth proportional to 20,465.98, 30,644.22 and 11,688.82 is: 17,501.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,465.98 : 30,644.22 = 11,688.82 : x
  2. Step 2: Convert to fraction form
    20,465.98/30,644.22 = 11,688.82/x
  3. Step 3: Cross multiply
    20,465.98x = 30,644.22 × 11,688.82
  4. Step 4: Simplify right side
    20,465.98x = 358,194,771.62
  5. Step 5: Solve for x
    x = 358,194,771.62/20,465.98
  6. Step 6: Final answer
    x = 17,501.96

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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.