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Finding the Fourth Proportional to 9,998.62, 14,987.25 and 7,525.78

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Solution

The fourth proportional to 9,998.62, 14,987.25 and 7,525.78 is: 11,280.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,998.62 : 14,987.25 = 7,525.78 : x
  2. Step 2: Convert to fraction form
    9,998.62/14,987.25 = 7,525.78/x
  3. Step 3: Cross multiply
    9,998.62x = 14,987.25 × 7,525.78
  4. Step 4: Simplify right side
    9,998.62x = 112,790,708.84
  5. Step 5: Solve for x
    x = 112,790,708.84/9,998.62
  6. Step 6: Final answer
    x = 11,280.63

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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.