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Finding the Fourth Proportional to 15,694.75, 21,662.48 and 8,984.25

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Solution

The fourth proportional to 15,694.75, 21,662.48 and 8,984.25 is: 12,400.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,694.75 : 21,662.48 = 8,984.25 : x
  2. Step 2: Convert to fraction form
    15,694.75/21,662.48 = 8,984.25/x
  3. Step 3: Cross multiply
    15,694.75x = 21,662.48 × 8,984.25
  4. Step 4: Simplify right side
    15,694.75x = 194,621,158.40
  5. Step 5: Solve for x
    x = 194,621,158.40/15,694.75
  6. Step 6: Final answer
    x = 12,400.40

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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.