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Finding the Fourth Proportional to 20,294.56, 30,427.53 and 7,804.09

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Solution

The fourth proportional to 20,294.56, 30,427.53 and 7,804.09 is: 11,700.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,294.56 : 30,427.53 = 7,804.09 : x
  2. Step 2: Convert to fraction form
    20,294.56/30,427.53 = 7,804.09/x
  3. Step 3: Cross multiply
    20,294.56x = 30,427.53 × 7,804.09
  4. Step 4: Simplify right side
    20,294.56x = 237,459,182.60
  5. Step 5: Solve for x
    x = 237,459,182.60/20,294.56
  6. Step 6: Final answer
    x = 11,700.63

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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.