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Finding the Fourth Proportional to 13,468.39, 20,174.94 and 7,904.90

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Solution

The fourth proportional to 13,468.39, 20,174.94 and 7,904.90 is: 11,841.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,468.39 : 20,174.94 = 7,904.90 : x
  2. Step 2: Convert to fraction form
    13,468.39/20,174.94 = 7,904.90/x
  3. Step 3: Cross multiply
    13,468.39x = 20,174.94 × 7,904.90
  4. Step 4: Simplify right side
    13,468.39x = 159,480,933.64
  5. Step 5: Solve for x
    x = 159,480,933.64/13,468.39
  6. Step 6: Final answer
    x = 11,841.13

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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.