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Finding the Fourth Proportional to 14,281.20, 19,707.84 and 7,993.80

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Solution

The fourth proportional to 14,281.20, 19,707.84 and 7,993.80 is: 11,031.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,281.20 : 19,707.84 = 7,993.80 : x
  2. Step 2: Convert to fraction form
    14,281.20/19,707.84 = 7,993.80/x
  3. Step 3: Cross multiply
    14,281.20x = 19,707.84 × 7,993.80
  4. Step 4: Simplify right side
    14,281.20x = 157,540,531.39
  5. Step 5: Solve for x
    x = 157,540,531.39/14,281.20
  6. Step 6: Final answer
    x = 11,031.32

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