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Finding the Fourth Proportional to 20,460.75, 30,691.04 and 5,669.63

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Solution

The fourth proportional to 20,460.75, 30,691.04 and 5,669.63 is: 8,504.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.75 : 30,691.04 = 5,669.63 : x
  2. Step 2: Convert to fraction form
    20,460.75/30,691.04 = 5,669.63/x
  3. Step 3: Cross multiply
    20,460.75x = 30,691.04 × 5,669.63
  4. Step 4: Simplify right side
    20,460.75x = 174,006,673.49
  5. Step 5: Solve for x
    x = 174,006,673.49/20,460.75
  6. Step 6: Final answer
    x = 8,504.41

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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.