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Finding the Fourth Proportional to 13,674.30, 20,499.11 and 4,907.15

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Solution

The fourth proportional to 13,674.30, 20,499.11 and 4,907.15 is: 7,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,674.30 : 20,499.11 = 4,907.15 : x
  2. Step 2: Convert to fraction form
    13,674.30/20,499.11 = 4,907.15/x
  3. Step 3: Cross multiply
    13,674.30x = 20,499.11 × 4,907.15
  4. Step 4: Simplify right side
    13,674.30x = 100,592,207.64
  5. Step 5: Solve for x
    x = 100,592,207.64/13,674.30
  6. Step 6: Final answer
    x = 7,356.30

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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.