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Finding the Fourth Proportional to 14,333.92, 19,780.15 and 7,960.92

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Solution

The fourth proportional to 14,333.92, 19,780.15 and 7,960.92 is: 10,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,333.92 : 19,780.15 = 7,960.92 : x
  2. Step 2: Convert to fraction form
    14,333.92/19,780.15 = 7,960.92/x
  3. Step 3: Cross multiply
    14,333.92x = 19,780.15 × 7,960.92
  4. Step 4: Simplify right side
    14,333.92x = 157,468,191.74
  5. Step 5: Solve for x
    x = 157,468,191.74/14,333.92
  6. Step 6: Final answer
    x = 10,985.70

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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.