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Finding the Fourth Proportional to 12,755.84, 19,008.56 and 12,338.24

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Solution

The fourth proportional to 12,755.84, 19,008.56 and 12,338.24 is: 18,386.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.84 : 19,008.56 = 12,338.24 : x
  2. Step 2: Convert to fraction form
    12,755.84/19,008.56 = 12,338.24/x
  3. Step 3: Cross multiply
    12,755.84x = 19,008.56 × 12,338.24
  4. Step 4: Simplify right side
    12,755.84x = 234,532,175.33
  5. Step 5: Solve for x
    x = 234,532,175.33/12,755.84
  6. Step 6: Final answer
    x = 18,386.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.