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Finding the Fourth Proportional to 17,118.12, 25,698.06 and 9,728.40

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Solution

The fourth proportional to 17,118.12, 25,698.06 and 9,728.40 is: 14,604.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,118.12 : 25,698.06 = 9,728.40 : x
  2. Step 2: Convert to fraction form
    17,118.12/25,698.06 = 9,728.40/x
  3. Step 3: Cross multiply
    17,118.12x = 25,698.06 × 9,728.40
  4. Step 4: Simplify right side
    17,118.12x = 250,001,006.90
  5. Step 5: Solve for x
    x = 250,001,006.90/17,118.12
  6. Step 6: Final answer
    x = 14,604.47

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1.5x scale

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.