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Finding the Fourth Proportional to 15,674.88, 21,626.96 and 8,958.08

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Solution

The fourth proportional to 15,674.88, 21,626.96 and 8,958.08 is: 12,359.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,674.88 : 21,626.96 = 8,958.08 : x
  2. Step 2: Convert to fraction form
    15,674.88/21,626.96 = 8,958.08/x
  3. Step 3: Cross multiply
    15,674.88x = 21,626.96 × 8,958.08
  4. Step 4: Simplify right side
    15,674.88x = 193,736,037.84
  5. Step 5: Solve for x
    x = 193,736,037.84/15,674.88
  6. Step 6: Final answer
    x = 12,359.65

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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.