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Finding the Fourth Proportional to 12,918.44, 19,373.81 and 5,022.18

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Solution

The fourth proportional to 12,918.44, 19,373.81 and 5,022.18 is: 7,531.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.44 : 19,373.81 = 5,022.18 : x
  2. Step 2: Convert to fraction form
    12,918.44/19,373.81 = 5,022.18/x
  3. Step 3: Cross multiply
    12,918.44x = 19,373.81 × 5,022.18
  4. Step 4: Simplify right side
    12,918.44x = 97,298,846.31
  5. Step 5: Solve for x
    x = 97,298,846.31/12,918.44
  6. Step 6: Final answer
    x = 7,531.78

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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.