Home / 12,643.20-18,961.56-4,744.08

Finding the Fourth Proportional to 12,643.20, 18,961.56 and 4,744.08

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Solution

The fourth proportional to 12,643.20, 18,961.56 and 4,744.08 is: 7,114.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,643.20 : 18,961.56 = 4,744.08 : x
  2. Step 2: Convert to fraction form
    12,643.20/18,961.56 = 4,744.08/x
  3. Step 3: Cross multiply
    12,643.20x = 18,961.56 × 4,744.08
  4. Step 4: Simplify right side
    12,643.20x = 89,955,157.56
  5. Step 5: Solve for x
    x = 89,955,157.56/12,643.20
  6. Step 6: Final answer
    x = 7,114.90

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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.