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Finding the Fourth Proportional to 9,997.55, 15,005.54 and 9,394.77

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Solution

The fourth proportional to 9,997.55, 15,005.54 and 9,394.77 is: 14,100.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,997.55 : 15,005.54 = 9,394.77 : x
  2. Step 2: Convert to fraction form
    9,997.55/15,005.54 = 9,394.77/x
  3. Step 3: Cross multiply
    9,997.55x = 15,005.54 × 9,394.77
  4. Step 4: Simplify right side
    9,997.55x = 140,973,597.03
  5. Step 5: Solve for x
    x = 140,973,597.03/9,997.55
  6. Step 6: Final answer
    x = 14,100.81

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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.