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Finding the Fourth Proportional to 20,446.10, 30,654.79 and 7,955.60

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Solution

The fourth proportional to 20,446.10, 30,654.79 and 7,955.60 is: 11,927.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446.10 : 30,654.79 = 7,955.60 : x
  2. Step 2: Convert to fraction form
    20,446.10/30,654.79 = 7,955.60/x
  3. Step 3: Cross multiply
    20,446.10x = 30,654.79 × 7,955.60
  4. Step 4: Simplify right side
    20,446.10x = 243,877,247.32
  5. Step 5: Solve for x
    x = 243,877,247.32/20,446.10
  6. Step 6: Final answer
    x = 11,927.81

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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.