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Finding the Fourth Proportional to 14,805.56, 20,396.54 and 10,321.20

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Solution

The fourth proportional to 14,805.56, 20,396.54 and 10,321.20 is: 14,218.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,805.56 : 20,396.54 = 10,321.20 : x
  2. Step 2: Convert to fraction form
    14,805.56/20,396.54 = 10,321.20/x
  3. Step 3: Cross multiply
    14,805.56x = 20,396.54 × 10,321.20
  4. Step 4: Simplify right side
    14,805.56x = 210,516,768.65
  5. Step 5: Solve for x
    x = 210,516,768.65/14,805.56
  6. Step 6: Final answer
    x = 14,218.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.