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Finding the Fourth Proportional to 14,087.88, 19,440 and 8,118.36

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Solution

The fourth proportional to 14,087.88, 19,440 and 8,118.36 is: 11,202.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,087.88 : 19,440 = 8,118.36 : x
  2. Step 2: Convert to fraction form
    14,087.88/19,440 = 8,118.36/x
  3. Step 3: Cross multiply
    14,087.88x = 19,440 × 8,118.36
  4. Step 4: Simplify right side
    14,087.88x = 157,820,918.40
  5. Step 5: Solve for x
    x = 157,820,918.40/14,087.88
  6. Step 6: Final answer
    x = 11,202.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.