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Finding the Fourth Proportional to 12,843.64, 19,265.19 and 5,918.14

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Solution

The fourth proportional to 12,843.64, 19,265.19 and 5,918.14 is: 8,877.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,843.64 : 19,265.19 = 5,918.14 : x
  2. Step 2: Convert to fraction form
    12,843.64/19,265.19 = 5,918.14/x
  3. Step 3: Cross multiply
    12,843.64x = 19,265.19 × 5,918.14
  4. Step 4: Simplify right side
    12,843.64x = 114,014,021.19
  5. Step 5: Solve for x
    x = 114,014,021.19/12,843.64
  6. Step 6: Final answer
    x = 8,877.08

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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.