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Finding the Fourth Proportional to 20,606.74, 30,910.03 and 7,460.12

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Solution

The fourth proportional to 20,606.74, 30,910.03 and 7,460.12 is: 11,190.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.74 : 30,910.03 = 7,460.12 : x
  2. Step 2: Convert to fraction form
    20,606.74/30,910.03 = 7,460.12/x
  3. Step 3: Cross multiply
    20,606.74x = 30,910.03 × 7,460.12
  4. Step 4: Simplify right side
    20,606.74x = 230,592,591.63
  5. Step 5: Solve for x
    x = 230,592,591.63/20,606.74
  6. Step 6: Final answer
    x = 11,190.16

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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.