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Finding the Fourth Proportional to 14,674.20, 20,218.64 and 9,950.28

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Solution

The fourth proportional to 14,674.20, 20,218.64 and 9,950.28 is: 13,709.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,674.20 : 20,218.64 = 9,950.28 : x
  2. Step 2: Convert to fraction form
    14,674.20/20,218.64 = 9,950.28/x
  3. Step 3: Cross multiply
    14,674.20x = 20,218.64 × 9,950.28
  4. Step 4: Simplify right side
    14,674.20x = 201,181,129.22
  5. Step 5: Solve for x
    x = 201,181,129.22/14,674.20
  6. Step 6: Final answer
    x = 13,709.85

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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.